77070863 has 2 divisors, whose sum is σ = 77070864. Its totient is φ = 77070862.

The previous prime is 77070827. The next prime is 77070869. The reversal of 77070863 is 36807077.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77070863 - 2²⁴ = 60293647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77070869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38535431 + 38535432.

It is an arithmetic number, because the mean of its divisors is an integer number (38535432).

Almost surely, 2^77070863 is an apocalyptic number.

77070863 is a deficient number, since it is larger than the sum of its proper divisors (1).

77070863 is an equidigital number, since it uses as much as digits as its factorization.

77070863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 77070863 is about 8779.0012529900. The cubic root of 77070863 is about 425.5625546954.

The spelling of 77070863 in words is "seventy-seven million, seventy thousand, eight hundred sixty-three".