63857117 has 8 divisors (see below), whose sum is σ = 69795072. Its totient is φ = 58161600.

The previous prime is 63857099. The next prime is 63857141. The reversal of 63857117 is 71175836.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63857117 - 2⁸ = 63856861 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 (63857147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60059 + ... + 61112.

It is an arithmetic number, because the mean of its divisors is an integer number (8724384).

Almost surely, 2^63857117 is an apocalyptic number.

It is an amenable number.

63857117 is a deficient number, since it is larger than the sum of its proper divisors (5937955).

63857117 is a wasteful number, since it uses less digits than its factorization.

63857117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121219.

The product of its digits is 35280, while the sum is 38.

The square root of 63857117 is about 7991.0648226629. The cubic root of 63857117 is about 399.7021052853.

The spelling of 63857117 in words is "sixty-three million, eight hundred fifty-seven thousand, one hundred seventeen".