13620655 has 8 divisors (see below), whose sum is σ = 17306352. Its totient is φ = 10255488.

The previous prime is 13620641. The next prime is 13620667. The reversal of 13620655 is 55602631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13620655 - 2⁷ = 13620527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 80037 + ... + 80206.

It is an arithmetic number, because the mean of its divisors is an integer number (2163294).

Almost surely, 2^13620655 is an apocalyptic number.

13620655 is a deficient number, since it is larger than the sum of its proper divisors (3685697).

13620655 is a wasteful number, since it uses less digits than its factorization.

13620655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160265.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 13620655 is about 3690.6171570619. The cubic root of 13620655 is about 238.8174174349.

The spelling of 13620655 in words is "thirteen million, six hundred twenty thousand, six hundred fifty-five".