1066255278 has 32 divisors (see below), whose sum is σ = 2331987840. Its totient is φ = 322328160.

The previous prime is 1066255273. The next prime is 1066255291. The reversal of 1066255278 is 8725526601.

It is a super-2 number, since 2×1066255278² = 2273800635725714568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066255271) 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 15 ways as a sum of consecutive naturals, for example, 8376 + ... + 46932.

It is an arithmetic number, because the mean of its divisors is an integer number (72874620).

Almost surely, 2^1066255278 is an apocalyptic number.

1066255278 is an abundant number, since it is smaller than the sum of its proper divisors (1265732562).

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

1066255278 is a wasteful number, since it uses less digits than its factorization.

1066255278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38992.

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 1066255278 is about 32653.5645527406. The cubic root of 1066255278 is about 1021.6145383778.

The spelling of 1066255278 in words is "one billion, sixty-six million, two hundred fifty-five thousand, two hundred seventy-eight".