57680387 has 4 divisors (see below), whose sum is σ = 58047936. Its totient is φ = 57312840.

The previous prime is 57680351. The next prime is 57680401. The reversal of 57680387 is 78308675.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57680387 - 2⁶ = 57680323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57680087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183539 + ... + 183852.

It is an arithmetic number, because the mean of its divisors is an integer number (14511984).

Almost surely, 2^57680387 is an apocalyptic number.

57680387 is a deficient number, since it is larger than the sum of its proper divisors (367549).

57680387 is a wasteful number, since it uses less digits than its factorization.

57680387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367548.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 57680387 is about 7594.7604965529. The cubic root of 57680387 is about 386.3753295771.

The spelling of 57680387 in words is "fifty-seven million, six hundred eighty thousand, three hundred eighty-seven".