76687856 has 20 divisors (see below), whose sum is σ = 169809072. Its totient is φ = 32866176.

The previous prime is 76687847. The next prime is 76687859. The reversal of 76687856 is 65878667.

It is a junction number, because it is equal to n+sod(n) for n = 76687798 and 76687807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76687859) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 342245 + ... + 342468.

Almost surely, 2^76687856 is an apocalyptic number.

It is an amenable number.

76687856 is an abundant number, since it is smaller than the sum of its proper divisors (93121216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

76687856 is a wasteful number, since it uses less digits than its factorization.

76687856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684728 (or 684722 counting only the distinct ones).

The product of its digits is 3386880, while the sum is 53.

The square root of 76687856 is about 8757.1602703159. The cubic root of 76687856 is about 424.8564331689.

The spelling of 76687856 in words is "seventy-six million, six hundred eighty-seven thousand, eight hundred fifty-six".