1066436407 has 4 divisors (see below), whose sum is σ = 1066521456. Its totient is φ = 1066351360.

The previous prime is 1066436381. The next prime is 1066436417. The reversal of 1066436407 is 7046346601.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1066436407 - 2²³ = 1058047799 is a prime.

It is a super-2 number, since 2×1066436407² = 2274573220350139298, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066436417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19594 + ... + 50167.

It is an arithmetic number, because the mean of its divisors is an integer number (266630364).

Almost surely, 2^1066436407 is an apocalyptic number.

1066436407 is a deficient number, since it is larger than the sum of its proper divisors (85049).

1066436407 is an equidigital number, since it uses as much as digits as its factorization.

1066436407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85048.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 1066436407 is about 32656.3379300252. The cubic root of 1066436407 is about 1021.6723836695.

It can be divided in two parts, 106643640 and 7, that multiplied together give a triangular number (746505480 = T₃₈₆₃₉).

The spelling of 1066436407 in words is "one billion, sixty-six million, four hundred thirty-six thousand, four hundred seven".