7612656640 has 44 divisors (see below), whose sum is σ = 18261467136. Its totient is φ = 3045060608.

The previous prime is 7612656533. The next prime is 7612656671. The reversal of 7612656640 is 466562167.

It is a happy number.

It is a super-2 number, since 2×7612656640² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 738304 + ... + 748543.

It is an arithmetic number, because the mean of its divisors is an integer number (415033344).

Almost surely, 2^7612656640 is an apocalyptic number.

It is an amenable number.

7612656640 is an abundant number, since it is smaller than the sum of its proper divisors (10648810496).

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

7612656640 is a wasteful number, since it uses less digits than its factorization.

7612656640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486872 (or 1486854 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 43.

The square root of 7612656640 is about 87250.5394825728. The cubic root of 7612656640 is about 1967.1859501424.

The spelling of 7612656640 in words is "seven billion, six hundred twelve million, six hundred fifty-six thousand, six hundred forty".