78696894 has 32 divisors (see below), whose sum is σ = 166302720. Its totient is φ = 24786272.

The previous prime is 78696887. The next prime is 78696899. The reversal of 78696894 is 49869687.

It is a super-2 number, since 2×78696894² = 12386402250494472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78696899) 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, 3367 + ... + 12989.

It is an arithmetic number, because the mean of its divisors is an integer number (5196960).

Almost surely, 2^78696894 is an apocalyptic number.

78696894 is an abundant number, since it is smaller than the sum of its proper divisors (87605826).

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

78696894 is a wasteful number, since it uses less digits than its factorization.

78696894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9704.

The product of its digits is 5225472, while the sum is 57.

The square root of 78696894 is about 8871.1269859021. The cubic root of 78696894 is about 428.5345716558.

The spelling of 78696894 in words is "seventy-eight million, six hundred ninety-six thousand, eight hundred ninety-four".