7651644460 has 24 divisors (see below), whose sum is σ = 16442140176. Its totient is φ = 2989479360.

The previous prime is 7651644449. The next prime is 7651644467. The reversal of 7651644460 is 644461567.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (7651644467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4447771 + ... + 4449490.

It is an arithmetic number, because the mean of its divisors is an integer number (685089174).

Almost surely, 2^7651644460 is an apocalyptic number.

It is an amenable number.

7651644460 is an abundant number, since it is smaller than the sum of its proper divisors (8790495716).

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

7651644460 is a wasteful number, since it uses less digits than its factorization.

7651644460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8897313 (or 8897311 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 43.

The square root of 7651644460 is about 87473.6786696432. The cubic root of 7651644460 is about 1970.5385130567.

The spelling of 7651644460 in words is "seven billion, six hundred fifty-one million, six hundred forty-four thousand, four hundred sixty".