76679920 has 20 divisors (see below), whose sum is σ = 178281000. Its totient is φ = 30671936.

The previous prime is 76679917. The next prime is 76679921. The reversal of 76679920 is 2997667.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76679921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479170 + ... + 479329.

It is an arithmetic number, because the mean of its divisors is an integer number (8914050).

Almost surely, 2^76679920 is an apocalyptic number.

It is an amenable number.

76679920 is an abundant number, since it is smaller than the sum of its proper divisors (101601080).

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

76679920 is a wasteful number, since it uses less digits than its factorization.

76679920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958512 (or 958506 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 76679920 is about 8756.7071436699. The cubic root of 76679920 is about 424.8417773196.

The spelling of 76679920 in words is "seventy-six million, six hundred seventy-nine thousand, nine hundred twenty".