671668264 has 32 divisors (see below), whose sum is σ = 1315523520. Its totient is φ = 320893056.

The previous prime is 671668247. The next prime is 671668267. The reversal of 671668264 is 462866176.

It is a super-2 number, since 2×671668264² = 902276513729547392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (671668267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303787 + ... + 305989.

It is an arithmetic number, because the mean of its divisors is an integer number (41110110).

Almost surely, 2^671668264 is an apocalyptic number.

It is an amenable number.

671668264 is a deficient number, since it is larger than the sum of its proper divisors (643855256).

671668264 is a wasteful number, since it uses less digits than its factorization.

671668264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3889 (or 3885 counting only the distinct ones).

The product of its digits is 580608, while the sum is 46.

The square root of 671668264 is about 25916.5635067615. The cubic root of 671668264 is about 875.7596728888.

The spelling of 671668264 in words is "six hundred seventy-one million, six hundred sixty-eight thousand, two hundred sixty-four".