674282279621 has 24 divisors (see below), whose sum is σ = 706509397440. Its totient is φ = 643342451136.

The previous prime is 674282279611. The next prime is 674282279659. The reversal of 674282279621 is 126972282476.

It is not a de Polignac number, because 674282279621 - 2²⁶ = 674215170757 is a prime.

It is a super-2 number, since 2×674282279621² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674282279611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13633880 + ... + 13683246.

It is an arithmetic number, because the mean of its divisors is an integer number (29437891560).

Almost surely, 2^674282279621 is an apocalyptic number.

It is an amenable number.

674282279621 is a deficient number, since it is larger than the sum of its proper divisors (32227117819).

674282279621 is an equidigital number, since it uses as much as digits as its factorization.

674282279621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49625 (or 49582 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 56.

The spelling of 674282279621 in words is "six hundred seventy-four billion, two hundred eighty-two million, two hundred seventy-nine thousand, six hundred twenty-one".