13574639 has 8 divisors (see below), whose sum is σ = 15123360. Its totient is φ = 12098016.

The previous prime is 13574629. The next prime is 13574651. The reversal of 13574639 is 93647531.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13574639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13574609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17627 + ... + 18380.

It is an arithmetic number, because the mean of its divisors is an integer number (1890420).

Almost surely, 2^13574639 is an apocalyptic number.

13574639 is a deficient number, since it is larger than the sum of its proper divisors (1548721).

13574639 is a wasteful number, since it uses less digits than its factorization.

13574639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36049.

The product of its digits is 68040, while the sum is 38.

The square root of 13574639 is about 3684.3776950796. The cubic root of 13574639 is about 238.5481738704.

The spelling of 13574639 in words is "thirteen million, five hundred seventy-four thousand, six hundred thirty-nine".