56778886 has 8 divisors (see below), whose sum is σ = 86612040. Its totient is φ = 27908208.

The previous prime is 56778851. The next prime is 56778899. The reversal of 56778886 is 68887765.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240471 + ... + 240706.

It is an arithmetic number, because the mean of its divisors is an integer number (10826505).

Almost surely, 2^56778886 is an apocalyptic number.

56778886 is a deficient number, since it is larger than the sum of its proper divisors (29833154).

56778886 is a wasteful number, since it uses less digits than its factorization.

56778886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481238.

The product of its digits is 4515840, while the sum is 55.

The square root of 56778886 is about 7535.1765739099. The cubic root of 56778886 is about 384.3518323093.

The spelling of 56778886 in words is "fifty-six million, seven hundred seventy-eight thousand, eight hundred eighty-six".