57639105 has 12 divisors (see below), whose sum is σ = 99907860. Its totient is φ = 30740832.

The previous prime is 57639089. The next prime is 57639107. The reversal of 57639105 is 50193675.

It is a happy number.

57639105 is a `hidden beast` number, since 5 + 7 + 639 + 10 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 43441281 + 14197824 = 6591^2 + 3768^2 .

It is not a de Polignac number, because 57639105 - 2⁴ = 57639089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57639105.

It is not an unprimeable number, because it can be changed into a prime (57639107) 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, 640390 + ... + 640479.

It is an arithmetic number, because the mean of its divisors is an integer number (8325655).

Almost surely, 2^57639105 is an apocalyptic number.

It is an amenable number.

57639105 is a deficient number, since it is larger than the sum of its proper divisors (42268755).

57639105 is a wasteful number, since it uses less digits than its factorization.

57639105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280880 (or 1280877 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 57639105 is about 7592.0422153726. The cubic root of 57639105 is about 386.2831309753.

The spelling of 57639105 in words is "fifty-seven million, six hundred thirty-nine thousand, one hundred five".