671912976 has 80 divisors (see below), whose sum is σ = 2006121600. Its totient is φ = 189809664.

The previous prime is 671912957. The next prime is 671912993. The reversal of 671912976 is 679219176.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 18670 + ... + 41138.

It is an arithmetic number, because the mean of its divisors is an integer number (25076520).

Almost surely, 2^671912976 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671912976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1003060800).

671912976 is an abundant number, since it is smaller than the sum of its proper divisors (1334208624).

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

671912976 is a wasteful number, since it uses less digits than its factorization.

671912976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22576 (or 22570 counting only the distinct ones).

The product of its digits is 285768, while the sum is 48.

The square root of 671912976 is about 25921.2842274452. The cubic root of 671912976 is about 875.8660164968.

The spelling of 671912976 in words is "six hundred seventy-one million, nine hundred twelve thousand, nine hundred seventy-six".