76866079 has 4 divisors (see below), whose sum is σ = 76950640. Its totient is φ = 76781520.

The previous prime is 76866071. The next prime is 76866089. The reversal of 76866079 is 97066867.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 76866079 - 2³ = 76866071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76866071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40902 + ... + 42739.

It is an arithmetic number, because the mean of its divisors is an integer number (19237660).

Almost surely, 2^76866079 is an apocalyptic number.

76866079 is a deficient number, since it is larger than the sum of its proper divisors (84561).

76866079 is an equidigital number, since it uses as much as digits as its factorization.

76866079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84560.

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 76866079 is about 8767.3302093625. The cubic root of 76866079 is about 425.1853014338.

The spelling of 76866079 in words is "seventy-six million, eight hundred sixty-six thousand, seventy-nine".