657048331 has 16 divisors (see below), whose sum is σ = 704383200. Its totient is φ = 611670528.

The previous prime is 657048323. The next prime is 657048347. The reversal of 657048331 is 133840756.

It is a cyclic number.

It is not a de Polignac number, because 657048331 - 2³ = 657048323 is a prime.

It is a super-2 number, since 2×657048331² = 863425018539771122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (657048361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118540 + ... + 123958.

It is an arithmetic number, because the mean of its divisors is an integer number (44023950).

Almost surely, 2^657048331 is an apocalyptic number.

657048331 is a deficient number, since it is larger than the sum of its proper divisors (47334869).

657048331 is a wasteful number, since it uses less digits than its factorization.

657048331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5598.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 657048331 is about 25632.9540045622. The cubic root of 657048331 is about 869.3589018962.

The spelling of 657048331 in words is "six hundred fifty-seven million, forty-eight thousand, three hundred thirty-one".