63245985 has 32 divisors (see below), whose sum is σ = 113097600. Its totient is φ = 29913600.

The previous prime is 63245971. The next prime is 63245989. The reversal of 63245985 is 58954236.

63245985 = 170² + 171² + ... + 579².

It is not a de Polignac number, because 63245985 - 2⁴ = 63245969 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63245989) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2091 + ... + 11439.

It is an arithmetic number, because the mean of its divisors is an integer number (3534300).

Almost surely, 2^63245985 is an apocalyptic number.

It is an amenable number.

63245985 is a deficient number, since it is larger than the sum of its proper divisors (49851615).

63245985 is a wasteful number, since it uses less digits than its factorization.

63245985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9409.

The product of its digits is 259200, while the sum is 42.

The square root of 63245985 is about 7952.7344354002. The cubic root of 63245985 is about 398.4229256799.

The spelling of 63245985 in words is "sixty-three million, two hundred forty-five thousand, nine hundred eighty-five".