13641345 has 32 divisors (see below), whose sum is σ = 24915840. Its totient is φ = 7076160.

The previous prime is 13641337. The next prime is 13641349. The reversal of 13641345 is 54314631.

13641345 is a `hidden beast` number, since 13 + 641 + 3 + 4 + 5 = 666.

It is not a de Polignac number, because 13641345 - 2³ = 13641337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13641349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3630 + ... + 6360.

It is an arithmetic number, because the mean of its divisors is an integer number (778620).

Almost surely, 2^13641345 is an apocalyptic number.

13641345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13641345 is a deficient number, since it is larger than the sum of its proper divisors (11274495).

13641345 is a wasteful number, since it uses less digits than its factorization.

13641345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2782 (or 2776 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 13641345 is about 3693.4191476192. The cubic root of 13641345 is about 238.9382787931.

Adding to 13641345 its reverse (54314631), we get a palindrome (67955976).

The spelling of 13641345 in words is "thirteen million, six hundred forty-one thousand, three hundred forty-five".