13061643 has 8 divisors (see below), whose sum is σ = 19903488. Its totient is φ = 7463784.

The previous prime is 13061641. The next prime is 13061663. The reversal of 13061643 is 34616031.

13061643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13061643 - 2¹ = 13061641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13061641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 310971 + ... + 311012.

It is an arithmetic number, because the mean of its divisors is an integer number (2487936).

Almost surely, 2^13061643 is an apocalyptic number.

13061643 is a deficient number, since it is larger than the sum of its proper divisors (6841845).

13061643 is an equidigital number, since it uses as much as digits as its factorization.

13061643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621993.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 13061643 is about 3614.0895118965. The cubic root of 13061643 is about 235.5045324383.

Adding to 13061643 its reverse (34616031), we get a palindrome (47677674).

The spelling of 13061643 in words is "thirteen million, sixty-one thousand, six hundred forty-three".