76461977 has 2 divisors, whose sum is σ = 76461978. Its totient is φ = 76461976.

The previous prime is 76461961. The next prime is 76461989. The reversal of 76461977 is 77916467.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59660176 + 16801801 = 7724^2 + 4099^2 .

It is an emirp because it is prime and its reverse (77916467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76461977 - 2⁴ = 76461961 is a prime.

It is not a weakly prime, because it can be changed into another prime (76461907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38230988 + 38230989.

It is an arithmetic number, because the mean of its divisors is an integer number (38230989).

Almost surely, 2^76461977 is an apocalyptic number.

It is an amenable number.

76461977 is a deficient number, since it is larger than the sum of its proper divisors (1).

76461977 is an equidigital number, since it uses as much as digits as its factorization.

76461977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 444528, while the sum is 47.

The square root of 76461977 is about 8744.2539418752. The cubic root of 76461977 is about 424.4388941286.

The spelling of 76461977 in words is "seventy-six million, four hundred sixty-one thousand, nine hundred seventy-seven".