7964360656 has 80 divisors (see below), whose sum is σ = 17870106240. Its totient is φ = 3368102400.

The previous prime is 7964360647. The next prime is 7964360669. The reversal of 7964360656 is 6560634697.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3924250 + ... + 3926278.

It is an arithmetic number, because the mean of its divisors is an integer number (223376328).

Almost surely, 2^7964360656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7964360656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8935053120).

7964360656 is an abundant number, since it is smaller than the sum of its proper divisors (9905745584).

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

7964360656 is a wasteful number, since it uses less digits than its factorization.

7964360656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2492 (or 2486 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 52.

The square root of 7964360656 is about 89243.2667264035. The cubic root of 7964360656 is about 1997.0256334312.

The spelling of 7964360656 in words is "seven billion, nine hundred sixty-four million, three hundred sixty thousand, six hundred fifty-six".