56779069 has 4 divisors (see below), whose sum is σ = 57341340. Its totient is φ = 56216800.

The previous prime is 56779061. The next prime is 56779097. The reversal of 56779069 is 96097765.

56779069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 47403225 + 9375844 = 6885^2 + 3062^2 .

It is a cyclic number.

It is not a de Polignac number, because 56779069 - 2³ = 56779061 is a prime.

It is a super-2 number, since 2×56779069² = 6447725353013522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56779061) 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, 280984 + ... + 281185.

It is an arithmetic number, because the mean of its divisors is an integer number (14335335).

Almost surely, 2^56779069 is an apocalyptic number.

It is an amenable number.

56779069 is a deficient number, since it is larger than the sum of its proper divisors (562271).

56779069 is a wasteful number, since it uses less digits than its factorization.

56779069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562270.

The product of its (nonzero) digits is 714420, while the sum is 49.

The square root of 56779069 is about 7535.1887169466. The cubic root of 56779069 is about 384.3522452346.

The spelling of 56779069 in words is "fifty-six million, seven hundred seventy-nine thousand, sixty-nine".