16423613 has 8 divisors (see below), whose sum is σ = 16766328. Its totient is φ = 16084224.

The previous prime is 16423609. The next prime is 16423621. The reversal of 16423613 is 31632461.

It can be written as a sum of positive squares in 4 ways, for example, as 3771364 + 12652249 = 1942^2 + 3557^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16423613 - 2² = 16423609 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 (16423663) 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, 10745 + ... + 12177.

It is an arithmetic number, because the mean of its divisors is an integer number (2095791).

Almost surely, 2^16423613 is an apocalyptic number.

It is an amenable number.

16423613 is a deficient number, since it is larger than the sum of its proper divisors (342715).

16423613 is a wasteful number, since it uses less digits than its factorization.

16423613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663.

The product of its digits is 2592, while the sum is 26.

The square root of 16423613 is about 4052.6057049755. The cubic root of 16423613 is about 254.1886966602.

The spelling of 16423613 in words is "sixteen million, four hundred twenty-three thousand, six hundred thirteen".