77982967 has 2 divisors, whose sum is σ = 77982968. Its totient is φ = 77982966.

The previous prime is 77982923. The next prime is 77982977. The reversal of 77982967 is 76928977.

It is a strong prime.

It is an emirp because it is prime and its reverse (76928977) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77982967 - 2¹⁵ = 77950199 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77982977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38991483 + 38991484.

It is an arithmetic number, because the mean of its divisors is an integer number (38991484).

Almost surely, 2^77982967 is an apocalyptic number.

77982967 is a deficient number, since it is larger than the sum of its proper divisors (1).

77982967 is an equidigital number, since it uses as much as digits as its factorization.

77982967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2667168, while the sum is 55.

The square root of 77982967 is about 8830.7965099418. The cubic root of 77982967 is about 427.2347649675.

The spelling of 77982967 in words is "seventy-seven million, nine hundred eighty-two thousand, nine hundred sixty-seven".