664055031 has 8 divisors (see below), whose sum is σ = 886263040. Its totient is φ = 442275192.

The previous prime is 664055027. The next prime is 664055033. The reversal of 664055031 is 130550466.

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

It is not a de Polignac number, because 664055031 - 2² = 664055027 is a prime.

It is a super-2 number, since 2×664055031² = 881938168392821922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 664055031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664055033) 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, 103405 + ... + 109638.

It is an arithmetic number, because the mean of its divisors is an integer number (110782880).

Almost surely, 2^664055031 is an apocalyptic number.

664055031 is a deficient number, since it is larger than the sum of its proper divisors (222208009).

664055031 is a wasteful number, since it uses less digits than its factorization.

664055031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214085.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 664055031 is about 25769.2652398162. The cubic root of 664055031 is about 872.4382349416.

The spelling of 664055031 in words is "six hundred sixty-four million, fifty-five thousand, thirty-one".