13707481 has 4 divisors (see below), whose sum is σ = 13739572. Its totient is φ = 13675392.

The previous prime is 13707469. The next prime is 13707509. The reversal of 13707481 is 18470731.

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 3841600 + 9865881 = 1960^2 + 3141^2 .

It is a cyclic number.

It is not a de Polignac number, because 13707481 - 2⁹ = 13706969 is a prime.

It is a super-2 number, since 2×13707481² = 375790070730722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13707181) 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, 15396 + ... + 16261.

It is an arithmetic number, because the mean of its divisors is an integer number (3434893).

Almost surely, 2^13707481 is an apocalyptic number.

It is an amenable number.

13707481 is a deficient number, since it is larger than the sum of its proper divisors (32091).

13707481 is an equidigital number, since it uses as much as digits as its factorization.

13707481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32090.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 13707481 is about 3702.3615436637. The cubic root of 13707481 is about 239.3237968093.

The spelling of 13707481 in words is "thirteen million, seven hundred seven thousand, four hundred eighty-one".