671982454 has 24 divisors (see below), whose sum is σ = 1193169600. Its totient is φ = 281949360.

The previous prime is 671982431. The next prime is 671982473. The reversal of 671982454 is 454289176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103654 + ... + 109945.

It is an arithmetic number, because the mean of its divisors is an integer number (49715400).

Almost surely, 2^671982454 is an apocalyptic number.

671982454 is a deficient number, since it is larger than the sum of its proper divisors (521187146).

671982454 is a wasteful number, since it uses less digits than its factorization.

671982454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213636 (or 213625 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The square root of 671982454 is about 25922.6243656000. The cubic root of 671982454 is about 875.8962045935.

The spelling of 671982454 in words is "six hundred seventy-one million, nine hundred eighty-two thousand, four hundred fifty-four".