63522813 has 8 divisors (see below), whose sum is σ = 87429376. Its totient is φ = 40982400.

The previous prime is 63522799. The next prime is 63522827. The reversal of 63522813 is 31822536.

It is an interprime number because it is at equal distance from previous prime (63522799) and next prime (63522827).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63522813 - 2⁶ = 63522749 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63522853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341428 + ... + 341613.

It is an arithmetic number, because the mean of its divisors is an integer number (10928672).

Almost surely, 2^63522813 is an apocalyptic number.

It is an amenable number.

63522813 is a deficient number, since it is larger than the sum of its proper divisors (23906563).

63522813 is a wasteful number, since it uses less digits than its factorization.

63522813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683075.

The product of its digits is 8640, while the sum is 30.

The square root of 63522813 is about 7970.1200116435. The cubic root of 63522813 is about 399.0033793471.

The spelling of 63522813 in words is "sixty-three million, five hundred twenty-two thousand, eight hundred thirteen".