63865087 has 8 divisors (see below), whose sum is σ = 75030480. Its totient is φ = 53592960.

The previous prime is 63865069. The next prime is 63865093. The reversal of 63865087 is 78056836.

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 63865087 - 2¹⁵ = 63832319 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 (63865037) 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, 223162 + ... + 223447.

It is an arithmetic number, because the mean of its divisors is an integer number (9378810).

Almost surely, 2^63865087 is an apocalyptic number.

63865087 is a deficient number, since it is larger than the sum of its proper divisors (11165393).

63865087 is a wasteful number, since it uses less digits than its factorization.

63865087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446633.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 63865087 is about 7991.5634890802. The cubic root of 63865087 is about 399.7187335193.

The spelling of 63865087 in words is "sixty-three million, eight hundred sixty-five thousand, eighty-seven".