56605779 has 6 divisors (see below), whose sum is σ = 81763916. Its totient is φ = 37737180.

The previous prime is 56605777. The next prime is 56605793. The reversal of 56605779 is 97750665.

It is a happy number.

It is not a de Polignac number, because 56605779 - 2¹ = 56605777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56605777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3144757 + ... + 3144774.

Almost surely, 2^56605779 is an apocalyptic number.

56605779 is a deficient number, since it is larger than the sum of its proper divisors (25158137).

56605779 is a wasteful number, since it uses less digits than its factorization.

56605779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6289537 (or 6289534 counting only the distinct ones).

The product of its (nonzero) digits is 396900, while the sum is 45.

The square root of 56605779 is about 7523.6812133423. The cubic root of 56605779 is about 383.9608317797.

The spelling of 56605779 in words is "fifty-six million, six hundred five thousand, seven hundred seventy-nine".