7660655520 has 192 divisors, whose sum is σ = 28468371456. Its totient is φ = 1694499840.

The previous prime is 7660655507. The next prime is 7660655539. The reversal of 7660655520 is 255560667.

It is a happy number.

It is a super-2 number, since 2×7660655520² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67387 + ... + 140933.

It is an arithmetic number, because the mean of its divisors is an integer number (148272768).

Almost surely, 2^7660655520 is an apocalyptic number.

7660655520 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 7660655520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14234185728).

7660655520 is an abundant number, since it is smaller than the sum of its proper divisors (20807715936).

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

7660655520 is a wasteful number, since it uses less digits than its factorization.

7660655520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73603 (or 73595 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 42.

The square root of 7660655520 is about 87525.1707796106. The cubic root of 7660655520 is about 1971.3117531524.

The spelling of 7660655520 in words is "seven billion, six hundred sixty million, six hundred fifty-five thousand, five hundred twenty".