57678013 has 4 divisors (see below), whose sum is σ = 59666940. Its totient is φ = 55689088.

The previous prime is 57677953. The next prime is 57678031. The reversal of 57678013 is 31087675.

57678013 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 40678884 + 16999129 = 6378^2 + 4123^2 .

It is a cyclic number.

It is not a de Polignac number, because 57678013 - 2²⁵ = 24123581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57678083) 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, 994420 + ... + 994477.

It is an arithmetic number, because the mean of its divisors is an integer number (14916735).

Almost surely, 2^57678013 is an apocalyptic number.

It is an amenable number.

57678013 is a deficient number, since it is larger than the sum of its proper divisors (1988927).

57678013 is a wasteful number, since it uses less digits than its factorization.

57678013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988926.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 57678013 is about 7594.6042029852. The cubic root of 57678013 is about 386.3700287134.

The spelling of 57678013 in words is "fifty-seven million, six hundred seventy-eight thousand, thirteen".