13621634 has 32 divisors (see below), whose sum is σ = 22934016. Its totient is φ = 6027840.

The previous prime is 13621631. The next prime is 13621637. The reversal of 13621634 is 43612631.

It is an interprime number because it is at equal distance from previous prime (13621631) and next prime (13621637).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (13621631) 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 15 ways as a sum of consecutive naturals, for example, 86684 + ... + 86840.

It is an arithmetic number, because the mean of its divisors is an integer number (716688).

Almost surely, 2^13621634 is an apocalyptic number.

13621634 is a deficient number, since it is larger than the sum of its proper divisors (9312382).

13621634 is a wasteful number, since it uses less digits than its factorization.

13621634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290.

The product of its digits is 2592, while the sum is 26.

The square root of 13621634 is about 3690.7497883222. The cubic root of 13621634 is about 238.8231390552.

The spelling of 13621634 in words is "thirteen million, six hundred twenty-one thousand, six hundred thirty-four".