13520605 has 8 divisors (see below), whose sum is σ = 18542592. Its totient is φ = 9271248.

The previous prime is 13520603. The next prime is 13520653. The reversal of 13520605 is 50602531.

It is a happy number.

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

It is not a de Polignac number, because 13520605 - 2¹ = 13520603 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13520603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193117 + ... + 193186.

It is an arithmetic number, because the mean of its divisors is an integer number (2317824).

Almost surely, 2^13520605 is an apocalyptic number.

It is an amenable number.

13520605 is a deficient number, since it is larger than the sum of its proper divisors (5021987).

13520605 is an equidigital number, since it uses as much as digits as its factorization.

13520605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386315.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 13520605 is about 3677.0375304041. The cubic root of 13520605 is about 238.2312384318.

It can be divided in two parts, 13520 and 605, that multiplied together give a square (8179600 = 2860²).

The spelling of 13520605 in words is "thirteen million, five hundred twenty thousand, six hundred five".