1066255740 has 72 divisors (see below), whose sum is σ = 3528343728. Its totient is φ = 258485760.

The previous prime is 1066255727. The next prime is 1066255747. The reversal of 1066255740 is 475526601.

It is a happy number.

1066255740 is a `hidden beast` number, since 1 + 0 + 6 + 62 + 557 + 40 = 666.

1066255740 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1066255740² = 2273802606165895200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1066255695 and 1066255704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066255747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 267277 + ... + 271236.

It is an arithmetic number, because the mean of its divisors is an integer number (49004774).

Almost surely, 2^1066255740 is an apocalyptic number.

1066255740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1066255740 is an abundant number, since it is smaller than the sum of its proper divisors (2462087988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1066255740 is a wasteful number, since it uses less digits than its factorization.

1066255740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538539 (or 538534 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 1066255740 is about 32653.5716270058. The cubic root of 1066255740 is about 1021.6146859303.

The spelling of 1066255740 in words is "one billion, sixty-six million, two hundred fifty-five thousand, seven hundred forty".