657329346 has 24 divisors (see below), whose sum is σ = 1462707324. Its totient is φ = 213187680.

The previous prime is 657329333. The next prime is 657329371. The reversal of 657329346 is 643923756.

It can be written as a sum of positive squares in 2 ways, for example, as 477903321 + 179426025 = 21861^2 + 13395^2 .

It is a super-2 number, since 2×657329346² = 864163738225575432, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 492825 + ... + 494156.

Almost surely, 2^657329346 is an apocalyptic number.

657329346 is an abundant number, since it is smaller than the sum of its proper divisors (805377978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

657329346 is a wasteful number, since it uses less digits than its factorization.

657329346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987026 (or 987023 counting only the distinct ones).

The product of its digits is 816480, while the sum is 45.

The square root of 657329346 is about 25638.4349366337. The cubic root of 657329346 is about 869.4828238158.

It can be divided in two parts, 65732 and 9346, that added together give a triangular number (75078 = T₃₈₇).

The spelling of 657329346 in words is "six hundred fifty-seven million, three hundred twenty-nine thousand, three hundred forty-six".