7207812864 has 720 divisors, whose sum is σ = 27352055808. Its totient is φ = 1839366144.

The previous prime is 7207812809. The next prime is 7207812889. The reversal of 7207812864 is 4682187027.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 56754369 + ... + 56754495.

Almost surely, 2^7207812864 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 7207812864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13676027904).

7207812864 is an abundant number, since it is smaller than the sum of its proper divisors (20144242944).

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

7207812864 is a wasteful number, since it uses less digits than its factorization.

7207812864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

The square root of 7207812864 is about 84898.8390026625. The cubic root of 7207812864 is about 1931.6769646242.

The spelling of 7207812864 in words is "seven billion, two hundred seven million, eight hundred twelve thousand, eight hundred sixty-four".