16904087 has 2 divisors, whose sum is σ = 16904088. Its totient is φ = 16904086.

The previous prime is 16904077. The next prime is 16904113. The reversal of 16904087 is 78040961.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16904087 - 2¹⁸ = 16641943 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16904077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8452043 + 8452044.

It is an arithmetic number, because the mean of its divisors is an integer number (8452044).

Almost surely, 2^16904087 is an apocalyptic number.

16904087 is a deficient number, since it is larger than the sum of its proper divisors (1).

16904087 is an equidigital number, since it uses as much as digits as its factorization.

16904087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 16904087 is about 4111.4580138924. The cubic root of 16904087 is about 256.6436794690.

The spelling of 16904087 in words is "sixteen million, nine hundred four thousand, eighty-seven".