76412977 has 4 divisors (see below), whose sum is σ = 80907876. Its totient is φ = 71918080.

The previous prime is 76412939. The next prime is 76412981. The reversal of 76412977 is 77921467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 77921467 = 13 ⋅5993959.

It can be written as a sum of positive squares in 2 ways, for example, as 25090081 + 51322896 = 5009^2 + 7164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76412977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76418977) 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, 2247424 + ... + 2247457.

It is an arithmetic number, because the mean of its divisors is an integer number (20226969).

Almost surely, 2^76412977 is an apocalyptic number.

It is an amenable number.

76412977 is a deficient number, since it is larger than the sum of its proper divisors (4494899).

76412977 is a wasteful number, since it uses less digits than its factorization.

76412977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4494898.

The product of its digits is 148176, while the sum is 43.

The square root of 76412977 is about 8741.4516529007. The cubic root of 76412977 is about 424.3482087498.

The spelling of 76412977 in words is "seventy-six million, four hundred twelve thousand, nine hundred seventy-seven".