63305013 has 16 divisors (see below), whose sum is σ = 86337216. Its totient is φ = 41249280.

The previous prime is 63305003. The next prime is 63305023. The reversal of 63305013 is 31050336.

It is an interprime number because it is at equal distance from previous prime (63305003) and next prime (63305023).

It is not a de Polignac number, because 63305013 - 2²⁴ = 46527797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63305003) 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, 22843 + ... + 25463.

It is an arithmetic number, because the mean of its divisors is an integer number (5396076).

Almost surely, 2^63305013 is an apocalyptic number.

It is an amenable number.

63305013 is a deficient number, since it is larger than the sum of its proper divisors (23032203).

63305013 is a wasteful number, since it uses less digits than its factorization.

63305013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2804.

The product of its (nonzero) digits is 810, while the sum is 21.

The square root of 63305013 is about 7956.4447462419. Note that the first 3 decimals coincide. The cubic root of 63305013 is about 398.5468376073.

Adding to 63305013 its reverse (31050336), we get a palindrome (94355349).

The spelling of 63305013 in words is "sixty-three million, three hundred five thousand, thirteen".