641761674 has 16 divisors (see below), whose sum is σ = 1286277408. Its totient is φ = 213461552.

The previous prime is 641761661. The next prime is 641761693. The reversal of 641761674 is 476167146.

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, 111717 + ... + 117320.

It is an arithmetic number, because the mean of its divisors is an integer number (80392338).

Almost surely, 2^641761674 is an apocalyptic number.

641761674 is an abundant number, since it is smaller than the sum of its proper divisors (644515734).

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

641761674 is a wasteful number, since it uses less digits than its factorization.

641761674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229509.

The product of its digits is 169344, while the sum is 42.

The square root of 641761674 is about 25333.0154936202. The cubic root of 641761674 is about 862.5638623580.

The spelling of 641761674 in words is "six hundred forty-one million, seven hundred sixty-one thousand, six hundred seventy-four".