674754251691 has 32 divisors (see below), whose sum is σ = 971102845440. Its totient is φ = 414280779264.

The previous prime is 674754251687. The next prime is 674754251713. The reversal of 674754251691 is 196152457476.

It is not a de Polignac number, because 674754251691 - 2² = 674754251687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (674754251621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38785891 + ... + 38803283.

It is an arithmetic number, because the mean of its divisors is an integer number (30346963920).

Almost surely, 2^674754251691 is an apocalyptic number.

674754251691 is a deficient number, since it is larger than the sum of its proper divisors (296348593749).

674754251691 is a wasteful number, since it uses less digits than its factorization.

674754251691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19635.

The product of its digits is 12700800, while the sum is 57.

The spelling of 674754251691 in words is "six hundred seventy-four billion, seven hundred fifty-four million, two hundred fifty-one thousand, six hundred ninety-one".