671609992 has 16 divisors (see below), whose sum is σ = 1264919040. Its totient is φ = 334298256.

The previous prime is 671609989. The next prime is 671610013. The reversal of 671609992 is 299906176.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186448 + ... + 190015.

It is an arithmetic number, because the mean of its divisors is an integer number (79057440).

Almost surely, 2^671609992 is an apocalyptic number.

It is an amenable number.

671609992 is a deficient number, since it is larger than the sum of its proper divisors (593309048).

671609992 is a wasteful number, since it uses less digits than its factorization.

671609992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376692 (or 376688 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 49.

The square root of 671609992 is about 25915.4392592524. The cubic root of 671609992 is about 875.7343460292.

The spelling of 671609992 in words is "six hundred seventy-one million, six hundred nine thousand, nine hundred ninety-two".