63081865 has 48 divisors (see below), whose sum is σ = 97511040. Its totient is φ = 38734080.

The previous prime is 63081841. The next prime is 63081877. The reversal of 63081865 is 56818036.

It is not a de Polignac number, because 63081865 - 2⁵ = 63081833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 239724 + ... + 239986.

It is an arithmetic number, because the mean of its divisors is an integer number (2031480).

Almost surely, 2^63081865 is an apocalyptic number.

It is an amenable number.

63081865 is a deficient number, since it is larger than the sum of its proper divisors (34429175).

63081865 is a wasteful number, since it uses less digits than its factorization.

63081865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 63081865 is about 7942.4092692331. The cubic root of 63081865 is about 398.0779983156.

The spelling of 63081865 in words is "sixty-three million, eighty-one thousand, eight hundred sixty-five".