78614117 has 2 divisors, whose sum is σ = 78614118. Its totient is φ = 78614116.

The previous prime is 78614113. The next prime is 78614147. The reversal of 78614117 is 71141687.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53202436 + 25411681 = 7294^2 + 5041^2 .

It is a cyclic number.

It is not a de Polignac number, because 78614117 - 2² = 78614113 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78614113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39307058 + 39307059.

It is an arithmetic number, because the mean of its divisors is an integer number (39307059).

Almost surely, 2^78614117 is an apocalyptic number.

It is an amenable number.

78614117 is a deficient number, since it is larger than the sum of its proper divisors (1).

78614117 is an equidigital number, since it uses as much as digits as its factorization.

78614117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9408, while the sum is 35.

The square root of 78614117 is about 8866.4602294264. The cubic root of 78614117 is about 428.3842681770.

The spelling of 78614117 in words is "seventy-eight million, six hundred fourteen thousand, one hundred seventeen".