13629145 has 4 divisors (see below), whose sum is σ = 16354980. Its totient is φ = 10903312.

The previous prime is 13629139. The next prime is 13629149. The reversal of 13629145 is 54192631.

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 7733961 + 5895184 = 2781^2 + 2428^2 .

It is a cyclic number.

It is not a de Polignac number, because 13629145 - 2⁷ = 13629017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13629149) 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, 1362910 + ... + 1362919.

It is an arithmetic number, because the mean of its divisors is an integer number (4088745).

Almost surely, 2^13629145 is an apocalyptic number.

It is an amenable number.

13629145 is a deficient number, since it is larger than the sum of its proper divisors (2725835).

13629145 is an equidigital number, since it uses as much as digits as its factorization.

13629145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2725834.

The product of its digits is 6480, while the sum is 31.

The square root of 13629145 is about 3691.7671920098. The cubic root of 13629145 is about 238.8670268638.

The spelling of 13629145 in words is "thirteen million, six hundred twenty-nine thousand, one hundred forty-five".