13645516 has 12 divisors (see below), whose sum is σ = 23945320. Its totient is φ = 6804000.

The previous prime is 13645507. The next prime is 13645519. The reversal of 13645516 is 61554631.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13645519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2985 + ... + 6016.

Almost surely, 2^13645516 is an apocalyptic number.

It is an amenable number.

13645516 is a deficient number, since it is larger than the sum of its proper divisors (10299804).

13645516 is a wasteful number, since it uses less digits than its factorization.

13645516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9384 (or 9382 counting only the distinct ones).

The product of its digits is 10800, while the sum is 31.

The square root of 13645516 is about 3693.9837574088. The cubic root of 13645516 is about 238.9626290313.

It can be divided in two parts, 13645 and 516, that added together give a square (14161 = 119²).

The spelling of 13645516 in words is "thirteen million, six hundred forty-five thousand, five hundred sixteen".