78844698 has 16 divisors (see below), whose sum is σ = 175210560. Its totient is φ = 26281548.

The previous prime is 78844679. The next prime is 78844721. The reversal of 78844698 is 89644887.

It is a super-2 number, since 2×78844698² = 12432972805422408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1460087 = 78844698 / (7 + 8 + 8 + 4 + 4 + 6 + 9 + 8).

It is a Curzon 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, 729990 + ... + 730097.

It is an arithmetic number, because the mean of its divisors is an integer number (10950660).

Almost surely, 2^78844698 is an apocalyptic number.

78844698 is an abundant number, since it is smaller than the sum of its proper divisors (96365862).

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

78844698 is a wasteful number, since it uses less digits than its factorization.

78844698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460098 (or 1460092 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 54.

The square root of 78844698 is about 8879.4536994119. The cubic root of 78844698 is about 428.8026869042.

It can be divided in two parts, 788446 and 98, that added together give a square (788544 = 888²).

The spelling of 78844698 in words is "seventy-eight million, eight hundred forty-four thousand, six hundred ninety-eight".