632686513 has 4 divisors (see below), whose sum is σ = 632807028. Its totient is φ = 632566000.

The previous prime is 632686511. The next prime is 632686519. The reversal of 632686513 is 315686236.

632686513 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 612463504 + 20223009 = 24748^2 + 4497^2 .

It is a cyclic number.

It is not a de Polignac number, because 632686513 - 2¹ = 632686511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (632686511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52006 + ... + 63007.

It is an arithmetic number, because the mean of its divisors is an integer number (158201757).

Almost surely, 2^632686513 is an apocalyptic number.

It is an amenable number.

632686513 is a deficient number, since it is larger than the sum of its proper divisors (120515).

632686513 is a wasteful number, since it uses less digits than its factorization.

632686513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120514.

The product of its digits is 155520, while the sum is 40.

The square root of 632686513 is about 25153.2604844780. The cubic root of 632686513 is about 858.4787026813.

The spelling of 632686513 in words is "six hundred thirty-two million, six hundred eighty-six thousand, five hundred thirteen".