671117764 has 6 divisors (see below), whose sum is σ = 1174456094. Its totient is φ = 335558880.

The previous prime is 671117731. The next prime is 671117767. The reversal of 671117764 is 467711176.

It can be written as a sum of positive squares in only one way, i.e., 627001600 + 44116164 = 25040^2 + 6642^2 .

It is not an unprimeable number, because it can be changed into a prime (671117767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83889717 + ... + 83889724.

Almost surely, 2^671117764 is an apocalyptic number.

It is an amenable number.

671117764 is a deficient number, since it is larger than the sum of its proper divisors (503338330).

671117764 is a wasteful number, since it uses less digits than its factorization.

671117764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167779445 (or 167779443 counting only the distinct ones).

The product of its digits is 49392, while the sum is 40.

The square root of 671117764 is about 25905.9407086483. The cubic root of 671117764 is about 875.5203496508.

The spelling of 671117764 in words is "six hundred seventy-one million, one hundred seventeen thousand, seven hundred sixty-four".