16668734 has 4 divisors (see below), whose sum is σ = 25003104. Its totient is φ = 8334366.

The previous prime is 16668733. The next prime is 16668749. The reversal of 16668734 is 43786661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43786661 = 5839 ⋅7499.

It is a junction number, because it is equal to n+sod(n) for n = 16668691 and 16668700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16668733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4167182 + ... + 4167185.

It is an arithmetic number, because the mean of its divisors is an integer number (6250776).

Almost surely, 2^16668734 is an apocalyptic number.

16668734 is a deficient number, since it is larger than the sum of its proper divisors (8334370).

16668734 is an equidigital number, since it uses as much as digits as its factorization.

16668734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8334369.

The product of its digits is 145152, while the sum is 41.

The square root of 16668734 is about 4082.7360923773. The cubic root of 16668734 is about 255.4470384748.

The spelling of 16668734 in words is "sixteen million, six hundred sixty-eight thousand, seven hundred thirty-four".