671696984 has 32 divisors (see below), whose sum is σ = 1466514720. Its totient is φ = 282437376.

The previous prime is 671696983. The next prime is 671696989. The reversal of 671696984 is 489696176.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671696981) 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, 110189 + ... + 116124.

It is an arithmetic number, because the mean of its divisors is an integer number (45828585).

Almost surely, 2^671696984 is an apocalyptic number.

It is an amenable number.

671696984 is an abundant number, since it is smaller than the sum of its proper divisors (794817736).

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

671696984 is a wasteful number, since it uses less digits than its factorization.

671696984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226379 (or 226375 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 56.

The square root of 671696984 is about 25917.1175866453. The cubic root of 671696984 is about 875.7721549729.

The spelling of 671696984 in words is "six hundred seventy-one million, six hundred ninety-six thousand, nine hundred eighty-four".