16643354 has 32 divisors (see below), whose sum is σ = 32350080. Its totient is φ = 6236352.

The previous prime is 16643353. The next prime is 16643381. The reversal of 16643354 is 45334661.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16643354.

It is not an unprimeable number, because it can be changed into a prime (16643351) 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, 1052 + ... + 5864.

It is an arithmetic number, because the mean of its divisors is an integer number (1010940).

Almost surely, 2^16643354 is an apocalyptic number.

16643354 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16643354 is a deficient number, since it is larger than the sum of its proper divisors (15706726).

16643354 is a wasteful number, since it uses less digits than its factorization.

16643354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4854.

The product of its digits is 25920, while the sum is 32.

The square root of 16643354 is about 4079.6266986086. The cubic root of 16643354 is about 255.3173237824.

The spelling of 16643354 in words is "sixteen million, six hundred forty-three thousand, three hundred fifty-four".