78964867 has 2 divisors, whose sum is σ = 78964868. Its totient is φ = 78964866.

The previous prime is 78964849. The next prime is 78964891. The reversal of 78964867 is 76846987.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78964867 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (78964807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39482433 + 39482434.

It is an arithmetic number, because the mean of its divisors is an integer number (39482434).

Almost surely, 2^78964867 is an apocalyptic number.

78964867 is a deficient number, since it is larger than the sum of its proper divisors (1).

78964867 is an equidigital number, since it uses as much as digits as its factorization.

78964867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 55.

The square root of 78964867 is about 8886.2178118702. The cubic root of 78964867 is about 429.0204256353.

It can be divided in two parts, 789 and 64867, that added together give a palindrome (65656).

The spelling of 78964867 in words is "seventy-eight million, nine hundred sixty-four thousand, eight hundred sixty-seven".