78987676 has 24 divisors (see below), whose sum is σ = 140853440. Its totient is φ = 38750400.

The previous prime is 78987673. The next prime is 78987691. The reversal of 78987676 is 67678987.

78987676 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 78987676.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78987673) 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, 56506 + ... + 57886.

Almost surely, 2^78987676 is an apocalyptic number.

It is an amenable number.

78987676 is a deficient number, since it is larger than the sum of its proper divisors (61865764).

78987676 is a wasteful number, since it uses less digits than its factorization.

78987676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645 (or 1643 counting only the distinct ones).

The product of its digits is 7112448, while the sum is 58.

The square root of 78987676 is about 8887.5011111110. The cubic root of 78987676 is about 429.0617291721.

The spelling of 78987676 in words is "seventy-eight million, nine hundred eighty-seven thousand, six hundred seventy-six".