674663634 has 64 divisors (see below), whose sum is σ = 1528934400. Its totient is φ = 220478544.

The previous prime is 674663629. The next prime is 674663641. The reversal of 674663634 is 436366476.

674663634 is a `hidden beast` number, since 6 + 7 + 4 + 6 + 6 + 3 + 634 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 674663634.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 711949 + ... + 712895.

It is an arithmetic number, because the mean of its divisors is an integer number (23889600).

Almost surely, 2^674663634 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 674663634, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764467200).

674663634 is an abundant number, since it is smaller than the sum of its proper divisors (854270766).

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

674663634 is a wasteful number, since it uses less digits than its factorization.

674663634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204 (or 1198 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 45.

The square root of 674663634 is about 25974.2879401919. The cubic root of 674663634 is about 877.0595876019.

The spelling of 674663634 in words is "six hundred seventy-four million, six hundred sixty-three thousand, six hundred thirty-four".