78537796 has 24 divisors (see below), whose sum is σ = 142273656. Its totient is φ = 37908480.

The previous prime is 78537769. The next prime is 78537821. The reversal of 78537796 is 69773587.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 215296 + 78322500 = 464^2 + 8850^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13440 + ... + 18376.

It is an arithmetic number, because the mean of its divisors is an integer number (5928069).

Almost surely, 2^78537796 is an apocalyptic number.

It is an amenable number.

78537796 is a deficient number, since it is larger than the sum of its proper divisors (63735860).

78537796 is a wasteful number, since it uses less digits than its factorization.

78537796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5079 (or 5077 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 52.

The square root of 78537796 is about 8862.1552683306. The cubic root of 78537796 is about 428.2455937547.

The spelling of 78537796 in words is "seventy-eight million, five hundred thirty-seven thousand, seven hundred ninety-six".