78687682 has 16 divisors (see below), whose sum is σ = 122527872. Its totient is φ = 37872720.

The previous prime is 78687671. The next prime is 78687689. The reversal of 78687682 is 28678687.

It is a super-3 number, since 3×78687682³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (78687689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1128 + ... + 12595.

It is an arithmetic number, because the mean of its divisors is an integer number (7657992).

Almost surely, 2^78687682 is an apocalyptic number.

78687682 is a deficient number, since it is larger than the sum of its proper divisors (43840190).

78687682 is a wasteful number, since it uses less digits than its factorization.

78687682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13833.

The product of its digits is 1806336, while the sum is 52.

The square root of 78687682 is about 8870.6077582091. The cubic root of 78687682 is about 428.5178500534.

The spelling of 78687682 in words is "seventy-eight million, six hundred eighty-seven thousand, six hundred eighty-two".