13745631 has 8 divisors (see below), whose sum is σ = 18396720. Its totient is φ = 9129152.

The previous prime is 13745629. The next prime is 13745647. The reversal of 13745631 is 13654731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13745631 - 2¹ = 13745629 is a prime.

It is a super-2 number, since 2×13745631² = 377884743176322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13745731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7710 + ... + 9323.

It is an arithmetic number, because the mean of its divisors is an integer number (2299590).

Almost surely, 2^13745631 is an apocalyptic number.

13745631 is a deficient number, since it is larger than the sum of its proper divisors (4651089).

13745631 is a wasteful number, since it uses less digits than its factorization.

13745631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17305.

The product of its digits is 7560, while the sum is 30.

The square root of 13745631 is about 3707.5100809034. The cubic root of 13745631 is about 239.5456159671.

The spelling of 13745631 in words is "thirteen million, seven hundred forty-five thousand, six hundred thirty-one".