13387587 has 16 divisors (see below), whose sum is σ = 18724608. Its totient is φ = 8492000.

The previous prime is 13387579. The next prime is 13387597. The reversal of 13387587 is 78578331.

It is a cyclic number.

It is not a de Polignac number, because 13387587 - 2³ = 13387579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13387597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16933 + ... + 17705.

It is an arithmetic number, because the mean of its divisors is an integer number (1170288).

Almost surely, 2^13387587 is an apocalyptic number.

13387587 is a deficient number, since it is larger than the sum of its proper divisors (5337021).

13387587 is a wasteful number, since it uses less digits than its factorization.

13387587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050.

The product of its digits is 141120, while the sum is 42.

The square root of 13387587 is about 3658.9051641167. The cubic root of 13387587 is about 237.4474092234.

The spelling of 13387587 in words is "thirteen million, three hundred eighty-seven thousand, five hundred eighty-seven".