13591642 has 4 divisors (see below), whose sum is σ = 20387466. Its totient is φ = 6795820.

The previous prime is 13591607. The next prime is 13591657. The reversal of 13591642 is 24619531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10246401 + 3345241 = 3201^2 + 1829^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3397909 + ... + 3397912.

Almost surely, 2^13591642 is an apocalyptic number.

13591642 is a deficient number, since it is larger than the sum of its proper divisors (6795824).

13591642 is an equidigital number, since it uses as much as digits as its factorization.

13591642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6795823.

The product of its digits is 6480, while the sum is 31.

The square root of 13591642 is about 3686.6844182816. The cubic root of 13591642 is about 238.6477306568.

The spelling of 13591642 in words is "thirteen million, five hundred ninety-one thousand, six hundred forty-two".