13530737 has 4 divisors (see below), whose sum is σ = 14760816. Its totient is φ = 12300660.

The previous prime is 13530709. The next prime is 13530757. The reversal of 13530737 is 73703531.

13530737 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73703531 = 11 ⋅6700321.

It is a cyclic number.

It is not a de Polignac number, because 13530737 - 2²² = 9336433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13530757) 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, 615023 + ... + 615044.

It is an arithmetic number, because the mean of its divisors is an integer number (3690204).

Almost surely, 2^13530737 is an apocalyptic number.

It is an amenable number.

13530737 is a deficient number, since it is larger than the sum of its proper divisors (1230079).

13530737 is a wasteful number, since it uses less digits than its factorization.

13530737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230078.

The product of its (nonzero) digits is 6615, while the sum is 29.

The square root of 13530737 is about 3678.4150119311. The cubic root of 13530737 is about 238.2907317316.

The spelling of 13530737 in words is "thirteen million, five hundred thirty thousand, seven hundred thirty-seven".