13670471 has 4 divisors (see below), whose sum is σ = 13687944. Its totient is φ = 13653000.

The previous prime is 13670417. The next prime is 13670497. The reversal of 13670471 is 17407631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13670471 is a prime.

It is a super-3 number, since 3×13670471³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13670071) 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, 7505 + ... + 9146.

It is an arithmetic number, because the mean of its divisors is an integer number (3421986).

Almost surely, 2^13670471 is an apocalyptic number.

13670471 is a deficient number, since it is larger than the sum of its proper divisors (17473).

13670471 is an equidigital number, since it uses as much as digits as its factorization.

13670471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17472.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 13670471 is about 3697.3600041110. The cubic root of 13670471 is about 239.1082124071.

It can be divided in two parts, 13670 and 471, that added together give a palindrome (14141).

The spelling of 13670471 in words is "thirteen million, six hundred seventy thousand, four hundred seventy-one".