78681084 has 12 divisors (see below), whose sum is σ = 183589224. Its totient is φ = 26227024.

The previous prime is 78681067. The next prime is 78681107. The reversal of 78681084 is 48018687.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3278367 + ... + 3278390.

It is an arithmetic number, because the mean of its divisors is an integer number (15299102).

Almost surely, 2^78681084 is an apocalyptic number.

It is an amenable number.

78681084 is an abundant number, since it is smaller than the sum of its proper divisors (104908140).

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

78681084 is a wasteful number, since it uses less digits than its factorization.

78681084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6556764 (or 6556762 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 78681084 is about 8870.2358480482. The cubic root of 78681084 is about 428.5058725760.

The spelling of 78681084 in words is "seventy-eight million, six hundred eighty-one thousand, eighty-four".