657065012 has 12 divisors (see below), whose sum is σ = 1199858016. Its totient is φ = 314248440.

The previous prime is 657064997. The next prime is 657065023. The reversal of 657065012 is 210560756.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 657065012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3570914 + ... + 3571097.

It is an arithmetic number, because the mean of its divisors is an integer number (99988168).

Almost surely, 2^657065012 is an apocalyptic number.

It is an amenable number.

657065012 is a deficient number, since it is larger than the sum of its proper divisors (542793004).

657065012 is a wasteful number, since it uses less digits than its factorization.

657065012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7142038 (or 7142036 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 657065012 is about 25633.2793844252. The cubic root of 657065012 is about 869.3662588655.

The spelling of 657065012 in words is "six hundred fifty-seven million, sixty-five thousand, twelve".