674891424 has 144 divisors (see below), whose sum is σ = 1989816192. Its totient is φ = 216843264.

The previous prime is 674891353. The next prime is 674891467. The reversal of 674891424 is 424198476.

It is a tau number, because it is divible by the number of its divisors (144).

It is a self number, because there is not a number n which added to its sum of digits gives 674891424.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 987787 + ... + 988469.

It is an arithmetic number, because the mean of its divisors is an integer number (13818168).

Almost surely, 2^674891424 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 674891424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (994908096).

674891424 is an abundant number, since it is smaller than the sum of its proper divisors (1314924768).

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

674891424 is a wasteful number, since it uses less digits than its factorization.

674891424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819 (or 808 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 674891424 is about 25978.6724834045. The cubic root of 674891424 is about 877.1582851418.

The spelling of 674891424 in words is "six hundred seventy-four million, eight hundred ninety-one thousand, four hundred twenty-four".