7679561420 has 24 divisors (see below), whose sum is σ = 16178616384. Its totient is φ = 3062007936.

The previous prime is 7679561401. The next prime is 7679561497. The reversal of 7679561420 is 241659767.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607124 + ... + 619643.

It is an arithmetic number, because the mean of its divisors is an integer number (674109016).

Almost surely, 2^7679561420 is an apocalyptic number.

It is an amenable number.

7679561420 is an abundant number, since it is smaller than the sum of its proper divisors (8499054964).

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

7679561420 is a wasteful number, since it uses less digits than its factorization.

7679561420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1227089 (or 1227087 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 47.

The square root of 7679561420 is about 87633.1068717753. The cubic root of 7679561420 is about 1972.9321021074.

The spelling of 7679561420 in words is "seven billion, six hundred seventy-nine million, five hundred sixty-one thousand, four hundred twenty".