13605500 has 24 divisors (see below), whose sum is σ = 29715504. Its totient is φ = 5442000.

The previous prime is 13605499. The next prime is 13605533. The reversal of 13605500 is 550631.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13106 + ... + 14105.

It is an arithmetic number, because the mean of its divisors is an integer number (1238146).

Almost surely, 2^13605500 is an apocalyptic number.

13605500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13605500 is an abundant number, since it is smaller than the sum of its proper divisors (16110004).

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

13605500 is a wasteful number, since it uses less digits than its factorization.

13605500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27230 (or 27218 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 13605500 is about 3688.5634059888. The cubic root of 13605500 is about 238.7288112917.

The spelling of 13605500 in words is "thirteen million, six hundred five thousand, five hundred".