7677531812 has 6 divisors (see below), whose sum is σ = 13435680678. Its totient is φ = 3838765904.

The previous prime is 7677531779. The next prime is 7677531839. The reversal of 7677531812 is 2181357767.

It can be written as a sum of positive squares in only one way, i.e., 6971248036 + 706283776 = 83494^2 + 26576^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 959691473 + ... + 959691480.

It is an arithmetic number, because the mean of its divisors is an integer number (2239280113).

Almost surely, 2^7677531812 is an apocalyptic number.

It is an amenable number.

7677531812 is a deficient number, since it is larger than the sum of its proper divisors (5758148866).

7677531812 is a wasteful number, since it uses less digits than its factorization.

7677531812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1919382957 (or 1919382955 counting only the distinct ones).

The product of its digits is 493920, while the sum is 47.

The square root of 7677531812 is about 87621.5259625168. The cubic root of 7677531812 is about 1972.7582800460.

The spelling of 7677531812 in words is "seven billion, six hundred seventy-seven million, five hundred thirty-one thousand, eight hundred twelve".