641642674 has 8 divisors (see below), whose sum is σ = 963689328. Its totient is φ = 320412900.

The previous prime is 641642669. The next prime is 641642693. The reversal of 641642674 is 476246146.

641642674 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202252 + ... + 205399.

It is an arithmetic number, because the mean of its divisors is an integer number (120461166).

Almost surely, 2^641642674 is an apocalyptic number.

641642674 is a deficient number, since it is larger than the sum of its proper divisors (322046654).

641642674 is a wasteful number, since it uses less digits than its factorization.

641642674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408440.

The product of its digits is 193536, while the sum is 40.

The square root of 641642674 is about 25330.6666710531. Note that the first 4 decimals coincide. The cubic root of 641642674 is about 862.5105448266.

The spelling of 641642674 in words is "six hundred forty-one million, six hundred forty-two thousand, six hundred seventy-four".