78614231 has 2 divisors, whose sum is σ = 78614232. Its totient is φ = 78614230.

The previous prime is 78614227. The next prime is 78614257. The reversal of 78614231 is 13241687.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78614231 - 2² = 78614227 is a prime.

It is a super-2 number, since 2×78614231² = 12360394631442722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78614201) 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, 39307115 + 39307116.

It is an arithmetic number, because the mean of its divisors is an integer number (39307116).

Almost surely, 2^78614231 is an apocalyptic number.

78614231 is a deficient number, since it is larger than the sum of its proper divisors (1).

78614231 is an equidigital number, since it uses as much as digits as its factorization.

78614231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 78614231 is about 8866.4666581452. The cubic root of 78614231 is about 428.3844752466.

The spelling of 78614231 in words is "seventy-eight million, six hundred fourteen thousand, two hundred thirty-one".