671312764 has 12 divisors (see below), whose sum is σ = 1215307800. Its totient is φ = 324081968.

The previous prime is 671312743. The next prime is 671312767. The reversal of 671312764 is 467213176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671312767) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2893474 + ... + 2893705.

It is an arithmetic number, because the mean of its divisors is an integer number (101275650).

Almost surely, 2^671312764 is an apocalyptic number.

It is an amenable number.

671312764 is a deficient number, since it is larger than the sum of its proper divisors (543995036).

671312764 is a wasteful number, since it uses less digits than its factorization.

671312764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5787212 (or 5787210 counting only the distinct ones).

The product of its digits is 42336, while the sum is 37.

The square root of 671312764 is about 25909.7040507992. The cubic root of 671312764 is about 875.6051385133.

The spelling of 671312764 in words is "six hundred seventy-one million, three hundred twelve thousand, seven hundred sixty-four".