78090068 has 24 divisors (see below), whose sum is σ = 157702272. Its totient is φ = 33141024.

The previous prime is 78090059. The next prime is 78090079. The reversal of 78090068 is 86009087.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

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, 10655 + ... + 16422.

It is an arithmetic number, because the mean of its divisors is an integer number (6570928).

Almost surely, 2^78090068 is an apocalyptic number.

It is an amenable number.

78090068 is an abundant number, since it is smaller than the sum of its proper divisors (79612204).

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

78090068 is a wasteful number, since it uses less digits than its factorization.

78090068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27191 (or 27189 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 78090068 is about 8836.8584915681. The cubic root of 78090068 is about 427.4302620988.

The spelling of 78090068 in words is "seventy-eight million, ninety thousand, sixty-eight".