16643090 has 16 divisors (see below), whose sum is σ = 30006720. Its totient is φ = 6646320.

The previous prime is 16643087. The next prime is 16643093. The reversal of 16643090 is 9034661.

It is an interprime number because it is at equal distance from previous prime (16643087) and next prime (16643093).

It is not an unprimeable number, because it can be changed into a prime (16643093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8285 + ... + 10095.

It is an arithmetic number, because the mean of its divisors is an integer number (1875420).

Almost surely, 2^16643090 is an apocalyptic number.

16643090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16643090 is a deficient number, since it is larger than the sum of its proper divisors (13363630).

16643090 is a wasteful number, since it uses less digits than its factorization.

16643090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2737.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 16643090 is about 4079.5943425787. The cubic root of 16643090 is about 255.3159738115.

The spelling of 16643090 in words is "sixteen million, six hundred forty-three thousand, ninety".