56706778 has 8 divisors (see below), whose sum is σ = 85102272. Its totient is φ = 28339356.

The previous prime is 56706763. The next prime is 56706779. The reversal of 56706778 is 87760765.

56706778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×56706778² = 6431317342282568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56706779) 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 in 3 ways as a sum of consecutive naturals, for example, 900 + ... + 10687.

It is an arithmetic number, because the mean of its divisors is an integer number (10637784).

Almost surely, 2^56706778 is an apocalyptic number.

56706778 is a deficient number, since it is larger than the sum of its proper divisors (28395494).

56706778 is a wasteful number, since it uses less digits than its factorization.

56706778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14036.

The product of its (nonzero) digits is 493920, while the sum is 46.

The square root of 56706778 is about 7530.3902953300. The cubic root of 56706778 is about 384.1890571148.

The spelling of 56706778 in words is "fifty-six million, seven hundred six thousand, seven hundred seventy-eight".