671365716 has 48 divisors (see below), whose sum is σ = 1795516800. Its totient is φ = 191260800.

The previous prime is 671365687. The next prime is 671365727. The reversal of 671365716 is 617563176.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17866 + ... + 40766.

It is an arithmetic number, because the mean of its divisors is an integer number (37406600).

Almost surely, 2^671365716 is an apocalyptic number.

It is an amenable number.

671365716 is an abundant number, since it is smaller than the sum of its proper divisors (1124151084).

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

671365716 is a wasteful number, since it uses less digits than its factorization.

671365716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23264 (or 23262 counting only the distinct ones).

The product of its digits is 158760, while the sum is 42.

The square root of 671365716 is about 25910.7258871688. The cubic root of 671365716 is about 875.6281599855.

The spelling of 671365716 in words is "six hundred seventy-one million, three hundred sixty-five thousand, seven hundred sixteen".