671782674 has 8 divisors (see below), whose sum is σ = 1343565360. Its totient is φ = 223927556.

The previous prime is 671782667. The next prime is 671782681. The reversal of 671782674 is 476287176.

It is an interprime number because it is at equal distance from previous prime (671782667) and next prime (671782681).

It is a sphenic number, since it is the product of 3 distinct primes.

671782674 is an admirable number.

It is a super-2 number, since 2×671782674² = 902583922173180552, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55981884 + ... + 55981895.

It is an arithmetic number, because the mean of its divisors is an integer number (167945670).

Almost surely, 2^671782674 is an apocalyptic number.

671782674 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

671782674 is a wasteful number, since it uses less digits than its factorization.

671782674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111963784.

The product of its digits is 790272, while the sum is 48.

The square root of 671782674 is about 25918.7706884412. The cubic root of 671782674 is about 875.8093948429.

The spelling of 671782674 in words is "six hundred seventy-one million, seven hundred eighty-two thousand, six hundred seventy-four".