666953077 has 32 divisors (see below), whose sum is σ = 799948800. Its totient is φ = 544294080.

The previous prime is 666953059. The next prime is 666953087. The reversal of 666953077 is 770359666.

It is a cyclic number.

It is not a de Polignac number, because 666953077 - 2¹¹ = 666951029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 666953077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666953017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3351424 + ... + 3351622.

It is an arithmetic number, because the mean of its divisors is an integer number (24998400).

Almost surely, 2^666953077 is an apocalyptic number.

It is an amenable number.

666953077 is a deficient number, since it is larger than the sum of its proper divisors (132995723).

666953077 is a wasteful number, since it uses less digits than its factorization.

666953077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481.

The product of its (nonzero) digits is 1428840, while the sum is 49.

The square root of 666953077 is about 25825.4346914045. The cubic root of 666953077 is about 873.7055480615.

The spelling of 666953077 in words is "six hundred sixty-six million, nine hundred fifty-three thousand, seventy-seven".