674766563920 has 160 divisors (see below), whose sum is σ = 1702331758080. Its totient is φ = 247866531840.

The previous prime is 674766563879. The next prime is 674766563929. The reversal of 674766563920 is 29365667476.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (674766563929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15218904 + ... + 15263176.

It is an arithmetic number, because the mean of its divisors is an integer number (10639573488).

Almost surely, 2^674766563920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 674766563920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (851165879040).

674766563920 is an abundant number, since it is smaller than the sum of its proper divisors (1027565194160).

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

674766563920 is a wasteful number, since it uses less digits than its factorization.

674766563920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44613 (or 44607 counting only the distinct ones).

The product of its (nonzero) digits is 68584320, while the sum is 61.

The spelling of 674766563920 in words is "six hundred seventy-four billion, seven hundred sixty-six million, five hundred sixty-three thousand, nine hundred twenty".