6642615974 has 8 divisors (see below), whose sum is σ = 10112639448. Its totient is φ = 3271736160.

The previous prime is 6642615971. The next prime is 6642615983. The reversal of 6642615974 is 4795162466.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6642615971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24785747 + ... + 24786014.

It is an arithmetic number, because the mean of its divisors is an integer number (1264079931).

Almost surely, 2^6642615974 is an apocalyptic number.

6642615974 is a deficient number, since it is larger than the sum of its proper divisors (3470023474).

6642615974 is a wasteful number, since it uses less digits than its factorization.

6642615974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49571830.

The product of its digits is 2177280, while the sum is 50.

The square root of 6642615974 is about 81502.2452083377. The cubic root of 6642615974 is about 1879.8060738175.

The spelling of 6642615974 in words is "six billion, six hundred forty-two million, six hundred fifteen thousand, nine hundred seventy-four".