63481913 has 8 divisors (see below), whose sum is σ = 70727040. Its totient is φ = 56482480.

The previous prime is 63481903. The next prime is 63481921. The reversal of 63481913 is 31918436.

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 63481913 - 2⁶ = 63481849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63481903) 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, 60878 + ... + 61911.

It is an arithmetic number, because the mean of its divisors is an integer number (8840880).

Almost surely, 2^63481913 is an apocalyptic number.

It is an amenable number.

63481913 is a deficient number, since it is larger than the sum of its proper divisors (7245127).

63481913 is a wasteful number, since it uses less digits than its factorization.

63481913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122847.

The product of its digits is 15552, while the sum is 35.

The square root of 63481913 is about 7967.5537651151. The cubic root of 63481913 is about 398.9177264342.

The spelling of 63481913 in words is "sixty-three million, four hundred eighty-one thousand, nine hundred thirteen".