13000645 has 8 divisors (see below), whose sum is σ = 17829504. Its totient is φ = 8914704.

The previous prime is 13000633. The next prime is 13000651. The reversal of 13000645 is 54600031.

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

It is a cyclic number.

It is not a de Polignac number, because 13000645 - 2⁹ = 13000133 is a prime.

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, 185689 + ... + 185758.

It is an arithmetic number, because the mean of its divisors is an integer number (2228688).

Almost surely, 2^13000645 is an apocalyptic number.

It is an amenable number.

13000645 is a deficient number, since it is larger than the sum of its proper divisors (4828859).

13000645 is an equidigital number, since it uses as much as digits as its factorization.

13000645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371459.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 13000645 is about 3605.6407197612. The cubic root of 13000645 is about 235.1373574536.

Adding to 13000645 its reverse (54600031), we get a palindrome (67600676).

The spelling of 13000645 in words is "thirteen million, six hundred forty-five", and thus it is an aban number.