671690375 has 32 divisors (see below), whose sum is σ = 886441920. Its totient is φ = 506736000.

The previous prime is 671690351. The next prime is 671690399. The reversal of 671690375 is 573096176.

It is an interprime number because it is at equal distance from previous prime (671690351) and next prime (671690399).

It is not a de Polignac number, because 671690375 - 2¹⁶ = 671624839 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 657365 + ... + 658385.

It is an arithmetic number, because the mean of its divisors is an integer number (27701310).

Almost surely, 2^671690375 is an apocalyptic number.

671690375 is a deficient number, since it is larger than the sum of its proper divisors (214751545).

671690375 is a wasteful number, since it uses less digits than its factorization.

671690375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332 (or 1322 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 671690375 is about 25916.9900837269. The cubic root of 671690375 is about 875.7692826474.

The spelling of 671690375 in words is "six hundred seventy-one million, six hundred ninety thousand, three hundred seventy-five".