63135620 has 24 divisors (see below), whose sum is σ = 140384664. Its totient is φ = 23768576.

The previous prime is 63135593. The next prime is 63135629. The reversal of 63135620 is 2653136.

It can be written as a sum of positive squares in 4 ways, for example, as 27899524 + 35236096 = 5282^2 + 5936^2 .

It is a super-2 number, since 2×63135620² = 7972213025568800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 63135620.

It is not an unprimeable number, because it can be changed into a prime (63135629) 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, 92507 + ... + 93186.

It is an arithmetic number, because the mean of its divisors is an integer number (5849361).

Almost surely, 2^63135620 is an apocalyptic number.

It is an amenable number.

63135620 is an abundant number, since it is smaller than the sum of its proper divisors (77249044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63135620 is a wasteful number, since it uses less digits than its factorization.

63135620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185719 (or 185717 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 63135620 is about 7945.7925973436. The cubic root of 63135620 is about 398.1910398234.

Adding to 63135620 its reverse (2653136), we get a palindrome (65788756).

The spelling of 63135620 in words is "sixty-three million, one hundred thirty-five thousand, six hundred twenty".