76679909 has 4 divisors (see below), whose sum is σ = 76753920. Its totient is φ = 76605900.

The previous prime is 76679903. The next prime is 76679917. The reversal of 76679909 is 90997667.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 76679909 - 2⁴ = 76679893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76679903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35429 + ... + 37530.

It is an arithmetic number, because the mean of its divisors is an integer number (19188480).

Almost surely, 2^76679909 is an apocalyptic number.

It is an amenable number.

76679909 is a deficient number, since it is larger than the sum of its proper divisors (74011).

76679909 is a wasteful number, since it uses less digits than its factorization.

76679909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74010.

The product of its (nonzero) digits is 1285956, while the sum is 53.

The square root of 76679909 is about 8756.7065155799. The cubic root of 76679909 is about 424.8417570046.

It can be divided in two parts, 7667 and 9909, that added together give a cube (17576 = 26³).

The spelling of 76679909 in words is "seventy-six million, six hundred seventy-nine thousand, nine hundred nine".