78091367 has 2 divisors, whose sum is σ = 78091368. Its totient is φ = 78091366.

The previous prime is 78091337. The next prime is 78091379. The reversal of 78091367 is 76319087.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78091367 - 2²² = 73897063 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 (78091337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39045683 + 39045684.

It is an arithmetic number, because the mean of its divisors is an integer number (39045684).

Almost surely, 2^78091367 is an apocalyptic number.

78091367 is a deficient number, since it is larger than the sum of its proper divisors (1).

78091367 is an equidigital number, since it uses as much as digits as its factorization.

78091367 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 78091367 is about 8836.9319902328. The cubic root of 78091367 is about 427.4326321348.

The spelling of 78091367 in words is "seventy-eight million, ninety-one thousand, three hundred sixty-seven".