13213587 has 8 divisors (see below), whose sum is σ = 17676736. Its totient is φ = 8779752.

The previous prime is 13213579. The next prime is 13213667. The reversal of 13213587 is 78531231.

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

It is not a de Polignac number, because 13213587 - 2³ = 13213579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13213507) 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, 6253 + ... + 8094.

It is an arithmetic number, because the mean of its divisors is an integer number (2209592).

Almost surely, 2^13213587 is an apocalyptic number.

13213587 is a deficient number, since it is larger than the sum of its proper divisors (4463149).

13213587 is a wasteful number, since it uses less digits than its factorization.

13213587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14657.

The product of its digits is 5040, while the sum is 30.

The square root of 13213587 is about 3635.0497933316. The cubic root of 13213587 is about 236.4142096240.

The spelling of 13213587 in words is "thirteen million, two hundred thirteen thousand, five hundred eighty-seven".