13161646 has 8 divisors (see below), whose sum is σ = 19758024. Its totient is φ = 6575640.

The previous prime is 13161601. The next prime is 13161703. The reversal of 13161646 is 64616131.

13161646 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 a super-3 number, since 3×13161646³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2961 + ... + 5923.

It is an arithmetic number, because the mean of its divisors is an integer number (2469753).

Almost surely, 2^13161646 is an apocalyptic number.

13161646 is a deficient number, since it is larger than the sum of its proper divisors (6596378).

13161646 is a wasteful number, since it uses less digits than its factorization.

13161646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5186.

The product of its digits is 2592, while the sum is 28.

The square root of 13161646 is about 3627.8982896437. The cubic root of 13161646 is about 236.1040310290.

Adding to 13161646 its reverse (64616131), we get a palindrome (77777777).

The spelling of 13161646 in words is "thirteen million, one hundred sixty-one thousand, six hundred forty-six".