665092427 has 16 divisors (see below), whose sum is σ = 698592000. Its totient is φ = 632538720.

The previous prime is 665092387. The next prime is 665092433. The reversal of 665092427 is 724290566.

It is a cyclic number.

It is not a de Polignac number, because 665092427 - 2¹⁰ = 665091403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (665092457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 433652 + ... + 435182.

It is an arithmetic number, because the mean of its divisors is an integer number (43662000).

Almost surely, 2^665092427 is an apocalyptic number.

665092427 is a deficient number, since it is larger than the sum of its proper divisors (33499573).

665092427 is a wasteful number, since it uses less digits than its factorization.

665092427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1826.

The product of its (nonzero) digits is 181440, while the sum is 41.

The square root of 665092427 is about 25789.3859368539. The cubic root of 665092427 is about 872.8923102819.

The spelling of 665092427 in words is "six hundred sixty-five million, ninety-two thousand, four hundred twenty-seven".