13353987 has 16 divisors (see below), whose sum is σ = 18385920. Its totient is φ = 8616000.

The previous prime is 13353983. The next prime is 13354013. The reversal of 13353987 is 78935331.

It is not a de Polignac number, because 13353987 - 2² = 13353983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13353983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18214 + ... + 18932.

It is an arithmetic number, because the mean of its divisors is an integer number (1149120).

Almost surely, 2^13353987 is an apocalyptic number.

13353987 is a deficient number, since it is larger than the sum of its proper divisors (5031933).

13353987 is a wasteful number, since it uses less digits than its factorization.

13353987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914.

The product of its digits is 68040, while the sum is 39.

The square root of 13353987 is about 3654.3107421236. The cubic root of 13353987 is about 237.2485952816.

The spelling of 13353987 in words is "thirteen million, three hundred fifty-three thousand, nine hundred eighty-seven".