16840087 has 8 divisors (see below), whose sum is σ = 18672912. Its totient is φ = 15057600.

The previous prime is 16840067. The next prime is 16840093. The reversal of 16840087 is 78004861.

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 not a de Polignac number, because 16840087 - 2¹¹ = 16838039 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 (16840067) 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, 11878 + ... + 13219.

It is an arithmetic number, because the mean of its divisors is an integer number (2334114).

Almost surely, 2^16840087 is an apocalyptic number.

16840087 is a deficient number, since it is larger than the sum of its proper divisors (1832825).

16840087 is a wasteful number, since it uses less digits than its factorization.

16840087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25169.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 16840087 is about 4103.6675060243. The cubic root of 16840087 is about 256.3193798256.

The spelling of 16840087 in words is "sixteen million, eight hundred forty thousand, eighty-seven".