13630523 has 4 divisors (see below), whose sum is σ = 13650000. Its totient is φ = 13611048.

The previous prime is 13630469. The next prime is 13630553. The reversal of 13630523 is 32503631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32503631 = 59 ⋅550909.

It is a cyclic number.

It is not a de Polignac number, because 13630523 - 2⁶ = 13630459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13630553) 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 3 ways as a sum of consecutive naturals, for example, 8648 + ... + 10101.

It is an arithmetic number, because the mean of its divisors is an integer number (3412500).

Almost surely, 2^13630523 is an apocalyptic number.

13630523 is a deficient number, since it is larger than the sum of its proper divisors (19477).

13630523 is an equidigital number, since it uses as much as digits as its factorization.

13630523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19476.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 13630523 is about 3691.9538187794. The cubic root of 13630523 is about 238.8750769572.

The spelling of 13630523 in words is "thirteen million, six hundred thirty thousand, five hundred twenty-three".