63489995 has 4 divisors (see below), whose sum is σ = 76188000. Its totient is φ = 50791992.

The previous prime is 63489989. The next prime is 63490027. The reversal of 63489995 is 59998436.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63489995 - 2⁸ = 63489739 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6348995 + ... + 6349004.

It is an arithmetic number, because the mean of its divisors is an integer number (19047000).

Almost surely, 2^63489995 is an apocalyptic number.

63489995 is a deficient number, since it is larger than the sum of its proper divisors (12698005).

63489995 is a wasteful number, since it uses less digits than its factorization.

63489995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12698004.

The product of its digits is 2099520, while the sum is 53.

The square root of 63489995 is about 7968.0609309919. The cubic root of 63489995 is about 398.9346547008.

The spelling of 63489995 in words is "sixty-three million, four hundred eighty-nine thousand, nine hundred ninety-five".