657228465 has 16 divisors (see below), whose sum is σ = 1168406400. Its totient is φ = 350521776.

The previous prime is 657228443. The next prime is 657228491. The reversal of 657228465 is 564822756.

It is not a de Polignac number, because 657228465 - 2⁵ = 657228433 is a prime.

It is a super-3 number, since 3×657228465³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 657228465.

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 15 ways as a sum of consecutive naturals, for example, 2434045 + ... + 2434314.

It is an arithmetic number, because the mean of its divisors is an integer number (73025400).

Almost surely, 2^657228465 is an apocalyptic number.

It is an amenable number.

657228465 is a deficient number, since it is larger than the sum of its proper divisors (511177935).

657228465 is a wasteful number, since it uses less digits than its factorization.

657228465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4868373 (or 4868367 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 657228465 is about 25636.4674828651. The cubic root of 657228465 is about 869.4383414038.

The spelling of 657228465 in words is "six hundred fifty-seven million, two hundred twenty-eight thousand, four hundred sixty-five".