657354345 has 16 divisors (see below), whose sum is σ = 1052220480. Its totient is φ = 350437824.

The previous prime is 657354323. The next prime is 657354367. The reversal of 657354345 is 543453756.

It is an interprime number because it is at equal distance from previous prime (657354323) and next prime (657354367).

It is not a de Polignac number, because 657354345 - 2¹⁶ = 657288809 is a prime.

It is a super-2 number, since 2×657354345² = 864229469780758050, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 657354297 and 657354306.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 32511 + ... + 48699.

It is an arithmetic number, because the mean of its divisors is an integer number (65763780).

Almost surely, 2^657354345 is an apocalyptic number.

It is an amenable number.

657354345 is a deficient number, since it is larger than the sum of its proper divisors (394866135).

657354345 is a wasteful number, since it uses less digits than its factorization.

657354345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18904.

The product of its digits is 756000, while the sum is 42.

The square root of 657354345 is about 25638.9224617572. The cubic root of 657354345 is about 869.4938461573.

The spelling of 657354345 in words is "six hundred fifty-seven million, three hundred fifty-four thousand, three hundred forty-five".