7685508240 has 120 divisors (see below), whose sum is σ = 27328806648. Its totient is φ = 1928908800.

The previous prime is 7685508221. The next prime is 7685508253. The reversal of 7685508240 is 428055867.

7685508240 is a `hidden beast` number, since 76 + 8 + 550 + 8 + 24 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 369100944 + 7316407296 = 19212^2 + 85536^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 301711 + ... + 326190.

Almost surely, 2^7685508240 is an apocalyptic number.

It is an amenable number.

7685508240 is an abundant number, since it is smaller than the sum of its proper divisors (19643298408).

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

7685508240 is a wasteful number, since it uses less digits than its factorization.

7685508240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627937 (or 627928 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The square root of 7685508240 is about 87667.0305188901. The cubic root of 7685508240 is about 1973.4412303535.

The spelling of 7685508240 in words is "seven billion, six hundred eighty-five million, five hundred eight thousand, two hundred forty".