13645307 has 4 divisors (see below), whose sum is σ = 14694960. Its totient is φ = 12595656.

The previous prime is 13645259. The next prime is 13645321. The reversal of 13645307 is 70354631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70354631 = 23 ⋅3058897.

It is a cyclic number.

It is not a de Polignac number, because 13645307 - 2¹² = 13641211 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13645307.

It is not an unprimeable number, because it can be changed into a prime (13645367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 524807 + ... + 524832.

It is an arithmetic number, because the mean of its divisors is an integer number (3673740).

Almost surely, 2^13645307 is an apocalyptic number.

13645307 is a deficient number, since it is larger than the sum of its proper divisors (1049653).

13645307 is a wasteful number, since it uses less digits than its factorization.

13645307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049652.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 13645307 is about 3693.9554680586. The cubic root of 13645307 is about 238.9614090104.

Adding to 13645307 its reverse (70354631), we get a palindrome (83999938).

The spelling of 13645307 in words is "thirteen million, six hundred forty-five thousand, three hundred seven".