57820613 has 4 divisors (see below), whose sum is σ = 57862560. Its totient is φ = 57778668.

The previous prime is 57820589. The next prime is 57820639. The reversal of 57820613 is 31602875.

It is a happy number.

57820613 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57820613 - 2¹⁰ = 57819589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57820613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57820513) 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, 18833 + ... + 21686.

It is an arithmetic number, because the mean of its divisors is an integer number (14465640).

Almost surely, 2^57820613 is an apocalyptic number.

It is an amenable number.

57820613 is a deficient number, since it is larger than the sum of its proper divisors (41947).

57820613 is a wasteful number, since it uses less digits than its factorization.

57820613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41946.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 57820613 is about 7603.9866517505. The cubic root of 57820613 is about 386.6881801182.

The spelling of 57820613 in words is "fifty-seven million, eight hundred twenty thousand, six hundred thirteen".