674742738 has 16 divisors (see below), whose sum is σ = 1357766496. Its totient is φ = 223534080.

The previous prime is 674742689. The next prime is 674742769. The reversal of 674742738 is 837247476.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343983 + ... + 345938.

It is an arithmetic number, because the mean of its divisors is an integer number (84860406).

Almost surely, 2^674742738 is an apocalyptic number.

674742738 is an abundant number, since it is smaller than the sum of its proper divisors (683023758).

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

674742738 is a wasteful number, since it uses less digits than its factorization.

674742738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690089.

The product of its digits is 1580544, while the sum is 48.

The square root of 674742738 is about 25975.8106322016. The cubic root of 674742738 is about 877.0938645397.

The spelling of 674742738 in words is "six hundred seventy-four million, seven hundred forty-two thousand, seven hundred thirty-eight".