16674887 has 4 divisors (see below), whose sum is σ = 16728816. Its totient is φ = 16620960.

The previous prime is 16674877. The next prime is 16674907. The reversal of 16674887 is 78847661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78847661 = 1091 ⋅72271.

It is a cyclic number.

It is not a de Polignac number, because 16674887 - 2⁸ = 16674631 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 (16674817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26498 + ... + 27119.

It is an arithmetic number, because the mean of its divisors is an integer number (4182204).

Almost surely, 2^16674887 is an apocalyptic number.

16674887 is a deficient number, since it is larger than the sum of its proper divisors (53929).

16674887 is an equidigital number, since it uses as much as digits as its factorization.

16674887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53928.

The product of its digits is 451584, while the sum is 47.

The square root of 16674887 is about 4083.4895616372. The cubic root of 16674887 is about 255.4784660219.

The spelling of 16674887 in words is "sixteen million, six hundred seventy-four thousand, eight hundred eighty-seven".