76679987 has 2 divisors, whose sum is σ = 76679988. Its totient is φ = 76679986.

The previous prime is 76679951. The next prime is 76680011. The reversal of 76679987 is 78997667.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76679987 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (76679917) 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 as a sum of consecutive naturals, namely, 38339993 + 38339994.

It is an arithmetic number, because the mean of its divisors is an integer number (38339994).

Almost surely, 2^76679987 is an apocalyptic number.

76679987 is a deficient number, since it is larger than the sum of its proper divisors (1).

76679987 is an equidigital number, since it uses as much as digits as its factorization.

76679987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8001504, while the sum is 59.

The square root of 76679987 is about 8756.7109693081. The cubic root of 76679987 is about 424.8419010565.

The spelling of 76679987 in words is "seventy-six million, six hundred seventy-nine thousand, nine hundred eighty-seven".