56646845 has 4 divisors (see below), whose sum is σ = 67976220. Its totient is φ = 45317472.

The previous prime is 56646833. The next prime is 56646869. The reversal of 56646845 is 54864665.

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 43375396 + 13271449 = 6586^2 + 3643^2 .

It is a cyclic number.

It is not a de Polignac number, because 56646845 - 2¹² = 56642749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56646796 and 56646805.

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, 5664680 + ... + 5664689.

It is an arithmetic number, because the mean of its divisors is an integer number (16994055).

Almost surely, 2^56646845 is an apocalyptic number.

It is an amenable number.

56646845 is a deficient number, since it is larger than the sum of its proper divisors (11329375).

56646845 is a wasteful number, since it uses less digits than its factorization.

56646845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11329374.

The product of its digits is 691200, while the sum is 44.

The square root of 56646845 is about 7526.4098347087. The cubic root of 56646845 is about 384.0536604879.

The spelling of 56646845 in words is "fifty-six million, six hundred forty-six thousand, eight hundred forty-five".