7656263720 has 96 divisors (see below), whose sum is σ = 20367926280. Its totient is φ = 2581931520.

The previous prime is 7656263677. The next prime is 7656263729. The reversal of 7656263720 is 273626567.

It can be written as a sum of positive squares in 4 ways, for example, as 1647223396 + 6009040324 = 40586^2 + 77518^2 .

It is not an unprimeable number, because it can be changed into a prime (7656263729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87542 + ... + 151578.

Almost surely, 2^7656263720 is an apocalyptic number.

7656263720 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7656263720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10183963140).

7656263720 is an abundant number, since it is smaller than the sum of its proper divisors (12711662560).

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

7656263720 is a wasteful number, since it uses less digits than its factorization.

7656263720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64123 (or 64112 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 44.

The square root of 7656263720 is about 87500.0783999649. The cubic root of 7656263720 is about 1970.9349680801.

The spelling of 7656263720 in words is "seven billion, six hundred fifty-six million, two hundred sixty-three thousand, seven hundred twenty".