657002072 has 16 divisors (see below), whose sum is σ = 1232800560. Its totient is φ = 328255264.

The previous prime is 657002069. The next prime is 657002089. The reversal of 657002072 is 270200756.

It is a happy number.

It is a super-2 number, since 2×657002072² = 863303445224586368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 19103 + ... + 40974.

It is an arithmetic number, because the mean of its divisors is an integer number (77050035).

Almost surely, 2^657002072 is an apocalyptic number.

It is an amenable number.

657002072 is a deficient number, since it is larger than the sum of its proper divisors (575798488).

657002072 is a wasteful number, since it uses less digits than its factorization.

657002072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61450 (or 61446 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 657002072 is about 25632.0516541302. The cubic root of 657002072 is about 869.3384992280.

The spelling of 657002072 in words is "six hundred fifty-seven million, two thousand, seventy-two".