78700711 has 2 divisors, whose sum is σ = 78700712. Its totient is φ = 78700710.

The previous prime is 78700709. The next prime is 78700753. The reversal of 78700711 is 11700787.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 78700711 - 2¹ = 78700709 is a prime.

Together with 78700709, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78700211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39350355 + 39350356.

It is an arithmetic number, because the mean of its divisors is an integer number (39350356).

Almost surely, 2^78700711 is an apocalyptic number.

78700711 is a deficient number, since it is larger than the sum of its proper divisors (1).

78700711 is an equidigital number, since it uses as much as digits as its factorization.

78700711 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2744, while the sum is 31.

The square root of 78700711 is about 8871.3421194315. The cubic root of 78700711 is about 428.5414998836.

The spelling of 78700711 in words is "seventy-eight million, seven hundred thousand, seven hundred eleven".