13645670 has 32 divisors (see below), whose sum is σ = 25989120. Its totient is φ = 5148000.

The previous prime is 13645633. The next prime is 13645691. The reversal of 13645670 is 7654631.

13645670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17795 + ... + 18545.

It is an arithmetic number, because the mean of its divisors is an integer number (812160).

Almost surely, 2^13645670 is an apocalyptic number.

13645670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13645670 is a deficient number, since it is larger than the sum of its proper divisors (12343450).

13645670 is a wasteful number, since it uses less digits than its factorization.

13645670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 13645670 is about 3694.0046020545. The cubic root of 13645670 is about 238.9635279861.

The spelling of 13645670 in words is "thirteen million, six hundred forty-five thousand, six hundred seventy".