56684385 has 12 divisors (see below), whose sum is σ = 98253012. Its totient is φ = 30231648.

The previous prime is 56684371. The next prime is 56684389. The reversal of 56684385 is 58348665.

56684385 is a `hidden beast` number, since 566 + 8 + 4 + 3 + 85 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 25010001 + 31674384 = 5001^2 + 5628^2 .

It is not a de Polignac number, because 56684385 - 2⁶ = 56684321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1259653 = 56684385 / (5 + 6 + 6 + 8 + 4 + 3 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 56684385.

It is not an unprimeable number, because it can be changed into a prime (56684389) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 629782 + ... + 629871.

It is an arithmetic number, because the mean of its divisors is an integer number (8187751).

Almost surely, 2^56684385 is an apocalyptic number.

It is an amenable number.

56684385 is a deficient number, since it is larger than the sum of its proper divisors (41568627).

56684385 is a wasteful number, since it uses less digits than its factorization.

56684385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1259664 (or 1259661 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 56684385 is about 7528.9033065912. The cubic root of 56684385 is about 384.1384795146.

The spelling of 56684385 in words is "fifty-six million, six hundred eighty-four thousand, three hundred eighty-five".