78198696 has 40 divisors (see below), whose sum is σ = 219030570. Its totient is φ = 26066016.

The previous prime is 78198677. The next prime is 78198727. The reversal of 78198696 is 69689187.

It can be written as a sum of positive squares in only one way, i.e., 46049796 + 32148900 = 6786^2 + 5670^2 .

It is a super-2 number, since 2×78198696² = 12230072112200832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 59691 + ... + 60986.

Almost surely, 2^78198696 is an apocalyptic number.

It is an amenable number.

78198696 is an abundant number, since it is smaller than the sum of its proper divisors (140831874).

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

78198696 is a wasteful number, since it uses less digits than its factorization.

78198696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120695 (or 120682 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 78198696 is about 8843.0026574688. The cubic root of 78198696 is about 427.6283640381.

The spelling of 78198696 in words is "seventy-eight million, one hundred ninety-eight thousand, six hundred ninety-six".