13623906 has 16 divisors (see below), whose sum is σ = 27632448. Its totient is φ = 4477200.

The previous prime is 13623901. The next prime is 13623943. The reversal of 13623906 is 60932631.

It is a happy number.

It is a super-2 number, since 2×13623906² = 371221629393672, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13623901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15565 + ... + 16416.

It is an arithmetic number, because the mean of its divisors is an integer number (1727028).

Almost surely, 2^13623906 is an apocalyptic number.

13623906 is an abundant number, since it is smaller than the sum of its proper divisors (14008542).

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

13623906 is a wasteful number, since it uses less digits than its factorization.

13623906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32057.

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 13623906 is about 3691.0575720246. The cubic root of 13623906 is about 238.8364163661.

It can be divided in two parts, 136 and 23906, that added together give a palindrome (24042).

The spelling of 13623906 in words is "thirteen million, six hundred twenty-three thousand, nine hundred six".