16424661 has 12 divisors (see below), whose sum is σ = 24071936. Its totient is φ = 9954120.

The previous prime is 16424651. The next prime is 16424671. The reversal of 16424661 is 16642461.

It is an interprime number because it is at equal distance from previous prime (16424651) and next prime (16424671).

It is not a de Polignac number, because 16424661 - 2¹⁰ = 16423637 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 (16424651) 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, 22261 + ... + 22986.

Almost surely, 2^16424661 is an apocalyptic number.

16424661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16424661 is a deficient number, since it is larger than the sum of its proper divisors (7647275).

16424661 is a wasteful number, since it uses less digits than its factorization.

16424661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45272 (or 45261 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 16424661 is about 4052.7350024397. The cubic root of 16424661 is about 254.1941031865.

It can be divided in two parts, 164 and 24661, that multiplied together give a palindrome (4044404).

The spelling of 16424661 in words is "sixteen million, four hundred twenty-four thousand, six hundred sixty-one".