6399764846 has 4 divisors (see below), whose sum is σ = 9599647272. Its totient is φ = 3199882422.

The previous prime is 6399764827. The next prime is 6399764897. The reversal of 6399764846 is 6484679936.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1599941210 + ... + 1599941213.

It is an arithmetic number, because the mean of its divisors is an integer number (2399911818).

Almost surely, 2^6399764846 is an apocalyptic number.

6399764846 is a deficient number, since it is larger than the sum of its proper divisors (3199882426).

6399764846 is a wasteful number, since it uses less digits than its factorization.

6399764846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3199882425.

The product of its digits is 47029248, while the sum is 62.

The square root of 6399764846 is about 79998.5302739994. The cubic root of 6399764846 is about 1856.6127938295.

The spelling of 6399764846 in words is "six billion, three hundred ninety-nine million, seven hundred sixty-four thousand, eight hundred forty-six".