76645967 has 2 divisors, whose sum is σ = 76645968. Its totient is φ = 76645966.

The previous prime is 76645949. The next prime is 76645969. The reversal of 76645967 is 76954667.

It is a strong prime.

It is an emirp because it is prime and its reverse (76954667) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 76645967 - 2⁸ = 76645711 is a prime.

Together with 76645969, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (76645969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38322983 + 38322984.

It is an arithmetic number, because the mean of its divisors is an integer number (38322984).

Almost surely, 2^76645967 is an apocalyptic number.

76645967 is a deficient number, since it is larger than the sum of its proper divisors (1).

76645967 is an equidigital number, since it uses as much as digits as its factorization.

76645967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1905120, while the sum is 50.

The square root of 76645967 is about 8754.7682436487. The cubic root of 76645967 is about 424.7790630201.

It can be divided in two parts, 7664 and 5967, that added together give a palindrome (13631).

The spelling of 76645967 in words is "seventy-six million, six hundred forty-five thousand, nine hundred sixty-seven".