63938985 has 16 divisors (see below), whose sum is σ = 111602880. Its totient is φ = 31000640.

The previous prime is 63938983. The next prime is 63938999. The reversal of 63938985 is 58983936.

It is not a de Polignac number, because 63938985 - 2¹ = 63938983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63938983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193590 + ... + 193919.

It is an arithmetic number, because the mean of its divisors is an integer number (6975180).

Almost surely, 2^63938985 is an apocalyptic number.

It is an amenable number.

63938985 is a deficient number, since it is larger than the sum of its proper divisors (47663895).

63938985 is a wasteful number, since it uses less digits than its factorization.

63938985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387528.

The product of its digits is 1399680, while the sum is 51.

The square root of 63938985 is about 7996.1856531724. The cubic root of 63938985 is about 399.8728450000.

The spelling of 63938985 in words is "sixty-three million, nine hundred thirty-eight thousand, nine hundred eighty-five".