657045146 has 4 divisors (see below), whose sum is σ = 985567722. Its totient is φ = 328522572.

The previous prime is 657045127. The next prime is 657045161. The reversal of 657045146 is 641540756.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 641355625 + 15689521 = 25325^2 + 3961^2 .

It is a super-2 number, since 2×657045146² = 863416647764322632, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164261285 + ... + 164261288.

Almost surely, 2^657045146 is an apocalyptic number.

657045146 is a deficient number, since it is larger than the sum of its proper divisors (328522576).

657045146 is a wasteful number, since it uses less digits than its factorization.

657045146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328522575.

The product of its (nonzero) digits is 100800, while the sum is 38.

The square root of 657045146 is about 25632.8918774297. The cubic root of 657045146 is about 869.3574971733.

The spelling of 657045146 in words is "six hundred fifty-seven million, forty-five thousand, one hundred forty-six".