6861568612 has 24 divisors (see below), whose sum is σ = 12305999160. Its totient is φ = 3345642240.

The previous prime is 6861568603. The next prime is 6861568687. The reversal of 6861568612 is 2168651686.

It can be written as a sum of positive squares in 4 ways, for example, as 180794916 + 6680773696 = 13446^2 + 81736^2 .

It is a super-2 number, since 2×6861568612² = 94162247634367213088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 431214 + ... + 446842.

It is an arithmetic number, because the mean of its divisors is an integer number (512749965).

Almost surely, 2^6861568612 is an apocalyptic number.

It is an amenable number.

6861568612 is a deficient number, since it is larger than the sum of its proper divisors (5444430548).

6861568612 is a wasteful number, since it uses less digits than its factorization.

6861568612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18351 (or 18349 counting only the distinct ones).

The product of its digits is 829440, while the sum is 49.

The square root of 6861568612 is about 82834.5858443199. The cubic root of 6861568612 is about 1900.2371460230.

The spelling of 6861568612 in words is "six billion, eight hundred sixty-one million, five hundred sixty-eight thousand, six hundred twelve".