6679619636 has 12 divisors (see below), whose sum is σ = 11763789828. Its totient is φ = 3318536832.

The previous prime is 6679619629. The next prime is 6679619641. The reversal of 6679619636 is 6369169766.

It can be written as a sum of positive squares in 2 ways, for example, as 2648131600 + 4031488036 = 51460^2 + 63494^2 .

It is a congruent number.

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, 5317541 + ... + 5318796.

It is an arithmetic number, because the mean of its divisors is an integer number (980315819).

Almost surely, 2^6679619636 is an apocalyptic number.

It is an amenable number.

6679619636 is a deficient number, since it is larger than the sum of its proper divisors (5084170192).

6679619636 is a wasteful number, since it uses less digits than its factorization.

6679619636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10636498 (or 10636496 counting only the distinct ones).

The product of its digits is 13226976, while the sum is 59.

The square root of 6679619636 is about 81728.9400151501. The cubic root of 6679619636 is about 1883.2901902631.

The spelling of 6679619636 in words is "six billion, six hundred seventy-nine million, six hundred nineteen thousand, six hundred thirty-six".