78680877 has 8 divisors (see below), whose sum is σ = 114444960. Its totient is φ = 47685360.

The previous prime is 78680873. The next prime is 78680891. The reversal of 78680877 is 77808687.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78680877 - 2² = 78680873 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78680873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1192102 + ... + 1192167.

It is an arithmetic number, because the mean of its divisors is an integer number (14305620).

Almost surely, 2^78680877 is an apocalyptic number.

It is an amenable number.

78680877 is a deficient number, since it is larger than the sum of its proper divisors (35764083).

78680877 is a wasteful number, since it uses less digits than its factorization.

78680877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384283.

The product of its (nonzero) digits is 1053696, while the sum is 51.

The square root of 78680877 is about 8870.2241798052. The cubic root of 78680877 is about 428.5054967940.

It can be divided in two parts, 786808 and 77, that added together give a triangular number (786885 = T₁₂₅₄).

The spelling of 78680877 in words is "seventy-eight million, six hundred eighty thousand, eight hundred seventy-seven".