76071977 has 2 divisors, whose sum is σ = 76071978. Its totient is φ = 76071976.

The previous prime is 76071917. The next prime is 76071979. The reversal of 76071977 is 77917067.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55785961 + 20286016 = 7469^2 + 4504^2 .

It is an emirp because it is prime and its reverse (77917067) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76071977 is a prime.

Together with 76071979, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76071979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38035988 + 38035989.

It is an arithmetic number, because the mean of its divisors is an integer number (38035989).

Almost surely, 2^76071977 is an apocalyptic number.

It is an amenable number.

76071977 is a deficient number, since it is larger than the sum of its proper divisors (1).

76071977 is an equidigital number, since it uses as much as digits as its factorization.

76071977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129654, while the sum is 44.

The square root of 76071977 is about 8721.9250742024. The cubic root of 76071977 is about 423.7160363540.

The spelling of 76071977 in words is "seventy-six million, seventy-one thousand, nine hundred seventy-seven".