16611343 has 12 divisors (see below), whose sum is σ = 19411920. Its totient is φ = 14173152.

The previous prime is 16611341. The next prime is 16611389. The reversal of 16611343 is 34311661.

It is a happy number.

It is not a de Polignac number, because 16611343 - 2¹ = 16611341 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 (16611341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12243 + ... + 13531.

It is an arithmetic number, because the mean of its divisors is an integer number (1617660).

Almost surely, 2^16611343 is an apocalyptic number.

16611343 is the 2578-th heptagonal number.

16611343 is a deficient number, since it is larger than the sum of its proper divisors (2800577).

16611343 is a wasteful number, since it uses less digits than its factorization.

16611343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566 (or 1559 counting only the distinct ones).

The product of its digits is 1296, while the sum is 25.

The square root of 16611343 is about 4075.7015347054. The cubic root of 16611343 is about 255.1535305093.

The spelling of 16611343 in words is "sixteen million, six hundred eleven thousand, three hundred forty-three".