13630642 has 4 divisors (see below), whose sum is σ = 20445966. Its totient is φ = 6815320.

The previous prime is 13630637. The next prime is 13630649. The reversal of 13630642 is 24603631.

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

It can be written as a sum of positive squares in only one way, i.e., 9554281 + 4076361 = 3091^2 + 2019^2 .

It is not an unprimeable number, because it can be changed into a prime (13630649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3407659 + ... + 3407662.

Almost surely, 2^13630642 is an apocalyptic number.

13630642 is a deficient number, since it is larger than the sum of its proper divisors (6815324).

13630642 is an equidigital number, since it uses as much as digits as its factorization.

13630642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6815323.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 13630642 is about 3691.9699348722. The cubic root of 13630642 is about 238.8757721140.

The spelling of 13630642 in words is "thirteen million, six hundred thirty thousand, six hundred forty-two".