13671601 has 4 divisors (see below), whose sum is σ = 13702500. Its totient is φ = 13640704.

The previous prime is 13671599. The next prime is 13671607. The reversal of 13671601 is 10617631.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4665600 + 9006001 = 2160^2 + 3001^2 .

It is a cyclic number.

It is not a de Polignac number, because 13671601 - 2¹ = 13671599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13671607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14776 + ... + 15673.

It is an arithmetic number, because the mean of its divisors is an integer number (3425625).

Almost surely, 2^13671601 is an apocalyptic number.

It is an amenable number.

13671601 is a deficient number, since it is larger than the sum of its proper divisors (30899).

13671601 is an equidigital number, since it uses as much as digits as its factorization.

13671601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30898.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 13671601 is about 3697.5128126891. The cubic root of 13671601 is about 239.1148004472.

The spelling of 13671601 in words is "thirteen million, six hundred seventy-one thousand, six hundred one".