80677878 has 16 divisors (see below), whose sum is σ = 161443776. Its totient is φ = 26877960.

The previous prime is 80677823. The next prime is 80677889. The reversal of 80677878 is 87877608.

It is a self number, because there is not a number n which added to its sum of digits gives 80677878.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20013 + ... + 23703.

It is an arithmetic number, because the mean of its divisors is an integer number (10090236).

Almost surely, 2^80677878 is an apocalyptic number.

80677878 is an abundant number, since it is smaller than the sum of its proper divisors (80765898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80677878 is a wasteful number, since it uses less digits than its factorization.

80677878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7339.

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

The square root of 80677878 is about 8982.0865059295. The cubic root of 80677878 is about 432.1005531536.

The spelling of 80677878 in words is "eighty million, six hundred seventy-seven thousand, eight hundred seventy-eight".