6942507664 has 20 divisors (see below), whose sum is σ = 13914940860. Its totient is φ = 3351555200.

The previous prime is 6942507653. The next prime is 6942507701. The reversal of 6942507664 is 4667052496.

It can be written as a sum of positive squares in 2 ways, for example, as 1190802064 + 5751705600 = 34508^2 + 75840^2 .

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, 7480687 + ... + 7481614.

It is an arithmetic number, because the mean of its divisors is an integer number (695747043).

Almost surely, 2^6942507664 is an apocalyptic number.

It is an amenable number.

6942507664 is an abundant number, since it is smaller than the sum of its proper divisors (6972433196).

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

6942507664 is a wasteful number, since it uses less digits than its factorization.

6942507664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14962338 (or 14962332 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 49.

The square root of 6942507664 is about 83321.7118403121. The cubic root of 6942507664 is about 1907.6796896181.

The spelling of 6942507664 in words is "six billion, nine hundred forty-two million, five hundred seven thousand, six hundred sixty-four".