63308913 has 16 divisors (see below), whose sum is σ = 87639552. Its totient is φ = 40608000.

The previous prime is 63308897. The next prime is 63308923. The reversal of 63308913 is 31980336.

It is not a de Polignac number, because 63308913 - 2⁴ = 63308897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63308923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14953 + ... + 18713.

It is an arithmetic number, because the mean of its divisors is an integer number (5477472).

Almost surely, 2^63308913 is an apocalyptic number.

It is an amenable number.

63308913 is a deficient number, since it is larger than the sum of its proper divisors (24330639).

63308913 is a wasteful number, since it uses less digits than its factorization.

63308913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3976.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 63308913 is about 7956.6898268061. The cubic root of 63308913 is about 398.5550217972. Note that the first 3 decimals are identical.

The spelling of 63308913 in words is "sixty-three million, three hundred eight thousand, nine hundred thirteen".