13471661 has 4 divisors (see below), whose sum is σ = 15396192. Its totient is φ = 11547132.

The previous prime is 13471643. The next prime is 13471669. The reversal of 13471661 is 16617431.

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.

It is a cyclic number.

It is not a de Polignac number, because 13471661 - 2¹⁰ = 13470637 is a prime.

It is a super-3 number, since 3×13471661³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13471669) 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, 962255 + ... + 962268.

It is an arithmetic number, because the mean of its divisors is an integer number (3849048).

Almost surely, 2^13471661 is an apocalyptic number.

It is an amenable number.

13471661 is a deficient number, since it is larger than the sum of its proper divisors (1924531).

13471661 is an equidigital number, since it uses as much as digits as its factorization.

13471661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924530.

The product of its digits is 3024, while the sum is 29.

The square root of 13471661 is about 3670.3761387629. The cubic root of 13471661 is about 237.9434286371.

The spelling of 13471661 in words is "thirteen million, four hundred seventy-one thousand, six hundred sixty-one".