78860077 has 16 divisors (see below), whose sum is σ = 85847040. Its totient is φ = 72214912.

The previous prime is 78860069. The next prime is 78860087. The reversal of 78860077 is 77006887.

It is a cyclic number.

It is not a de Polignac number, because 78860077 - 2³ = 78860069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78860017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90948 + ... + 91810.

It is an arithmetic number, because the mean of its divisors is an integer number (5365440).

Almost surely, 2^78860077 is an apocalyptic number.

It is an amenable number.

78860077 is a deficient number, since it is larger than the sum of its proper divisors (6986963).

78860077 is a wasteful number, since it uses less digits than its factorization.

78860077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052.

The product of its (nonzero) digits is 131712, while the sum is 43.

The square root of 78860077 is about 8880.3196451479. The cubic root of 78860077 is about 428.8305650324.

The spelling of 78860077 in words is "seventy-eight million, eight hundred sixty thousand, seventy-seven".