666492937 has 8 divisors (see below), whose sum is σ = 727272000. Its totient is φ = 605745360.

The previous prime is 666492923. The next prime is 666492979. The reversal of 666492937 is 739294666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 666492937 - 2⁷ = 666492809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666492997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69564 + ... + 78562.

It is an arithmetic number, because the mean of its divisors is an integer number (90909000).

Almost surely, 2^666492937 is an apocalyptic number.

It is an amenable number.

666492937 is a deficient number, since it is larger than the sum of its proper divisors (60779063).

666492937 is a wasteful number, since it uses less digits than its factorization.

666492937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15743.

The product of its digits is 2939328, while the sum is 52.

The square root of 666492937 is about 25816.5244949819. The cubic root of 666492937 is about 873.5045747223.

The spelling of 666492937 in words is "six hundred sixty-six million, four hundred ninety-two thousand, nine hundred thirty-seven".