78893684 has 6 divisors (see below), whose sum is σ = 138063954. Its totient is φ = 39446840.

The previous prime is 78893677. The next prime is 78893699. The reversal of 78893684 is 48639887.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 68525284 + 10368400 = 8278^2 + 3220^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9861707 + ... + 9861714.

It is an arithmetic number, because the mean of its divisors is an integer number (23010659).

Almost surely, 2^78893684 is an apocalyptic number.

It is an amenable number.

78893684 is a deficient number, since it is larger than the sum of its proper divisors (59170270).

78893684 is a wasteful number, since it uses less digits than its factorization.

78893684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19723425 (or 19723423 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 53.

The square root of 78893684 is about 8882.2116615176. The cubic root of 78893684 is about 428.8914731734.

The spelling of 78893684 in words is "seventy-eight million, eight hundred ninety-three thousand, six hundred eighty-four".