78810682 has 16 divisors (see below), whose sum is σ = 120728232. Its totient is φ = 38571520.

The previous prime is 78810679. The next prime is 78810707. The reversal of 78810682 is 28601887.

It can be written as a sum of positive squares in 4 ways, for example, as 67914081 + 10896601 = 8241^2 + 3301^2 .

It is a super-2 number, since 2×78810682² = 12422247194610248, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 80178 + ... + 81154.

Almost surely, 2^78810682 is an apocalyptic number.

78810682 is a deficient number, since it is larger than the sum of its proper divisors (41917550).

78810682 is a wasteful number, since it uses less digits than its factorization.

78810682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1793.

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 78810682 is about 8877.5380596199. The cubic root of 78810682 is about 428.7410118615.

The spelling of 78810682 in words is "seventy-eight million, eight hundred ten thousand, six hundred eighty-two".