78712682 has 4 divisors (see below), whose sum is σ = 118069026. Its totient is φ = 39356340.

The previous prime is 78712681. The next prime is 78712709. The reversal of 78712682 is 28621787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 28621787 = 443 ⋅64609.

It can be written as a sum of positive squares in only one way, i.e., 64657681 + 14055001 = 8041^2 + 3749^2 .

It is not an unprimeable number, because it can be changed into a prime (78712681) by changing a digit.

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 as a sum of consecutive naturals, namely, 19678169 + ... + 19678172.

Almost surely, 2^78712682 is an apocalyptic number.

78712682 is a deficient number, since it is larger than the sum of its proper divisors (39356344).

78712682 is a wasteful number, since it uses less digits than its factorization.

78712682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39356343.

The product of its digits is 75264, while the sum is 41.

The square root of 78712682 is about 8872.0167943935. The cubic root of 78712682 is about 428.5632269647.

The spelling of 78712682 in words is "seventy-eight million, seven hundred twelve thousand, six hundred eighty-two".