671689704 has 64 divisors (see below), whose sum is σ = 1922342400. Its totient is φ = 191588544.

The previous prime is 671689699. The next prime is 671689709. The reversal of 671689704 is 407986176.

It is an interprime number because it is at equal distance from previous prime (671689699) and next prime (671689709).

It is not an unprimeable number, because it can be changed into a prime (671689709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107679 + ... + 113745.

It is an arithmetic number, because the mean of its divisors is an integer number (30036600).

Almost surely, 2^671689704 is an apocalyptic number.

It is an amenable number.

671689704 is an abundant number, since it is smaller than the sum of its proper divisors (1250652696).

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

671689704 is a wasteful number, since it uses less digits than its factorization.

671689704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6742 (or 6738 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 671689704 is about 25916.9771385476. The cubic root of 671689704 is about 875.7689910243.

The spelling of 671689704 in words is "six hundred seventy-one million, six hundred eighty-nine thousand, seven hundred four".