78655267 has 2 divisors, whose sum is σ = 78655268. Its totient is φ = 78655266.

The previous prime is 78655223. The next prime is 78655309. The reversal of 78655267 is 76255687.

It is a strong prime.

It is an emirp because it is prime and its reverse (76255687) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78655267 - 2¹⁵ = 78622499 is a prime.

It is not a weakly prime, because it can be changed into another prime (78655217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39327633 + 39327634.

It is an arithmetic number, because the mean of its divisors is an integer number (39327634).

Almost surely, 2^78655267 is an apocalyptic number.

78655267 is a deficient number, since it is larger than the sum of its proper divisors (1).

78655267 is an equidigital number, since it uses as much as digits as its factorization.

78655267 is an evil number, because the sum of its binary digits is even.

The product of its digits is 705600, while the sum is 46.

The square root of 78655267 is about 8868.7804685875. The cubic root of 78655267 is about 428.4590000379.

The spelling of 78655267 in words is "seventy-eight million, six hundred fifty-five thousand, two hundred sixty-seven".