56720335 has 16 divisors (see below), whose sum is σ = 79258176. Its totient is φ = 38158848.

The previous prime is 56720333. The next prime is 56720351. The reversal of 56720335 is 53302765.

It is not a de Polignac number, because 56720335 - 2¹ = 56720333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56720297 and 56720306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56720333) 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 15 ways as a sum of consecutive naturals, for example, 13434 + ... + 17143.

It is an arithmetic number, because the mean of its divisors is an integer number (4953636).

Almost surely, 2^56720335 is an apocalyptic number.

56720335 is a deficient number, since it is larger than the sum of its proper divisors (22537841).

56720335 is a wasteful number, since it uses less digits than its factorization.

56720335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30642.

The product of its (nonzero) digits is 18900, while the sum is 31.

The square root of 56720335 is about 7531.2903940825. The cubic root of 56720335 is about 384.2196709510.

It can be divided in two parts, 567 and 20335, that added together give a palindrome (20902).

The spelling of 56720335 in words is "fifty-six million, seven hundred twenty thousand, three hundred thirty-five".