16624261 has 8 divisors (see below), whose sum is σ = 16856000. Its totient is φ = 16394400.

The previous prime is 16624247. The next prime is 16624271. The reversal of 16624261 is 16242661.

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 16624261 - 2⁷ = 16624133 is a prime.

It is a super-2 number, since 2×16624261² = 552732107592242, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16624271) 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, 27361 + ... + 27961.

It is an arithmetic number, because the mean of its divisors is an integer number (2107000).

Almost surely, 2^16624261 is an apocalyptic number.

It is an amenable number.

16624261 is a deficient number, since it is larger than the sum of its proper divisors (231739).

16624261 is a wasteful number, since it uses less digits than its factorization.

16624261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939.

The product of its digits is 3456, while the sum is 28.

The square root of 16624261 is about 4077.2859845736. The cubic root of 16624261 is about 255.2196543875.

The spelling of 16624261 in words is "sixteen million, six hundred twenty-four thousand, two hundred sixty-one".