63791985 has 8 divisors (see below), whose sum is σ = 102067200. Its totient is φ = 34022384.

The previous prime is 63791983. The next prime is 63791993. The reversal of 63791985 is 58919736.

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 63791985 - 2¹ = 63791983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63791983) 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, 2126385 + ... + 2126414.

It is an arithmetic number, because the mean of its divisors is an integer number (12758400).

Almost surely, 2^63791985 is an apocalyptic number.

It is an amenable number.

63791985 is a deficient number, since it is larger than the sum of its proper divisors (38275215).

63791985 is a wasteful number, since it uses less digits than its factorization.

63791985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4252807.

The product of its digits is 408240, while the sum is 48.

The square root of 63791985 is about 7986.9884812738. The cubic root of 63791985 is about 399.5661650549.

It can be divided in two parts, 63 and 791985, that multiplied together give a triangular number (49895055 = T₉₉₈₉).

The spelling of 63791985 in words is "sixty-three million, seven hundred ninety-one thousand, nine hundred eighty-five".