7686673640 has 16 divisors (see below), whose sum is σ = 17295015780. Its totient is φ = 3074669440.

The previous prime is 7686673613. The next prime is 7686673651. The reversal of 7686673640 is 463766867.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7106152804 + 580520836 = 84298^2 + 24094^2 .

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, 96083381 + ... + 96083460.

Almost surely, 2^7686673640 is an apocalyptic number.

It is an amenable number.

7686673640 is an abundant number, since it is smaller than the sum of its proper divisors (9608342140).

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

7686673640 is a wasteful number, since it uses less digits than its factorization.

7686673640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192166852 (or 192166848 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 53.

The square root of 7686673640 is about 87673.6770074120. The cubic root of 7686673640 is about 1973.5409735802.

The spelling of 7686673640 in words is "seven billion, six hundred eighty-six million, six hundred seventy-three thousand, six hundred forty".