16641423 has 16 divisors (see below), whose sum is σ = 24729600. Its totient is φ = 11060280.

The previous prime is 16641421. The next prime is 16641433. The reversal of 16641423 is 32414661.

16641423 is a `hidden beast` number, since 16 + 641 + 4 + 2 + 3 = 666.

It is not a de Polignac number, because 16641423 - 2¹ = 16641421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16641421) 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, 10578 + ... + 12048.

It is an arithmetic number, because the mean of its divisors is an integer number (1545600).

Almost surely, 2^16641423 is an apocalyptic number.

16641423 is a deficient number, since it is larger than the sum of its proper divisors (8088177).

16641423 is a wasteful number, since it uses less digits than its factorization.

16641423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1899 (or 1893 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 16641423 is about 4079.3900279331. The cubic root of 16641423 is about 255.3074492338.

The spelling of 16641423 in words is "sixteen million, six hundred forty-one thousand, four hundred twenty-three".