7640761872 has 40 divisors (see below), whose sum is σ = 19869373120. Its totient is φ = 2530051200.

The previous prime is 7640761841. The next prime is 7640761889. The reversal of 7640761872 is 2781670467.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519847 + ... + 534342.

It is an arithmetic number, because the mean of its divisors is an integer number (496734328).

Almost surely, 2^7640761872 is an apocalyptic number.

It is an amenable number.

7640761872 is an abundant number, since it is smaller than the sum of its proper divisors (12228611248).

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

7640761872 is a wasteful number, since it uses less digits than its factorization.

7640761872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054351 (or 1054345 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 48.

The square root of 7640761872 is about 87411.4516067546. The cubic root of 7640761872 is about 1969.6038672007.

The spelling of 7640761872 in words is "seven billion, six hundred forty million, seven hundred sixty-one thousand, eight hundred seventy-two".