657116026 has 48 divisors (see below), whose sum is σ = 1240804224. Its totient is φ = 255153888.

The previous prime is 657115933. The next prime is 657116027. The reversal of 657116026 is 620611756.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 657115982 and 657116000.

It is not an unprimeable number, because it can be changed into a prime (657116027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113416 + ... + 119068.

It is an arithmetic number, because the mean of its divisors is an integer number (25850088).

Almost surely, 2^657116026 is an apocalyptic number.

657116026 is a deficient number, since it is larger than the sum of its proper divisors (583688198).

657116026 is a wasteful number, since it uses less digits than its factorization.

657116026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5723 (or 5704 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 657116026 is about 25634.2744387275. The cubic root of 657116026 is about 869.3887572494.

The spelling of 657116026 in words is "six hundred fifty-seven million, one hundred sixteen thousand, twenty-six".