657045445 has 16 divisors (see below), whose sum is σ = 925446528. Its totient is φ = 438367680.

The previous prime is 657045419. The next prime is 657045463. The reversal of 657045445 is 544540756.

It is a happy number.

It is not a de Polignac number, because 657045445 - 2¹⁵ = 657012677 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 657045398 and 657045407.

It is a congruent number.

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, 252391 + ... + 254980.

It is an arithmetic number, because the mean of its divisors is an integer number (57840408).

Almost surely, 2^657045445 is an apocalyptic number.

It is an amenable number.

657045445 is a deficient number, since it is larger than the sum of its proper divisors (268401083).

657045445 is a wasteful number, since it uses less digits than its factorization.

657045445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507420.

The product of its (nonzero) digits is 336000, while the sum is 40.

The square root of 657045445 is about 25632.8977097791. The cubic root of 657045445 is about 869.3576290455.

The spelling of 657045445 in words is "six hundred fifty-seven million, forty-five thousand, four hundred forty-five".