5656778 has 4 divisors (see below), whose sum is σ = 8485170. Its totient is φ = 2828388.

The previous prime is 5656759. The next prime is 5656789. The reversal of 5656778 is 8776565.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5230369 + 426409 = 2287^2 + 653^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1414193 + ... + 1414196.

Almost surely, 2^5656778 is an apocalyptic number.

5656778 is a deficient number, since it is larger than the sum of its proper divisors (2828392).

5656778 is a wasteful number, since it uses less digits than its factorization.

5656778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2828391.

The product of its digits is 352800, while the sum is 44.

The square root of 5656778 is about 2378.3982004702. The cubic root of 5656778 is about 178.1789430550.

The spelling of 5656778 in words is "five million, six hundred fifty-six thousand, seven hundred seventy-eight".