7689886864 has 45 divisors (see below), whose sum is σ = 16384979289. Its totient is φ = 3493649280.

The previous prime is 7689886843. The next prime is 7689886921. The reversal of 7689886864 is 4686889867.

The square root of 7689886864 is 87692.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 5628000400 + 2061886464 = 75020^2 + 45408^2 .

It is a super-2 number, since 2×7689886864² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7689886793 and 7689886802.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3857452 + ... + 3859444.

Almost surely, 2^7689886864 is an apocalyptic number.

7689886864 is the 87692-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7689886864

7689886864 is an abundant number, since it is smaller than the sum of its proper divisors (8695092425).

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

7689886864 is an equidigital number, since it uses as much as digits as its factorization.

7689886864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4016 (or 2006 counting only the distinct ones).

The product of its digits is 222953472, while the sum is 70.

The cubic root of 7689886864 is about 1973.8159319518.

The spelling of 7689886864 in words is "seven billion, six hundred eighty-nine million, eight hundred eighty-six thousand, eight hundred sixty-four".