16624861 has 8 divisors (see below), whose sum is σ = 19203264. Its totient is φ = 14224320.

The previous prime is 16624841. The next prime is 16624889. The reversal of 16624861 is 16842661.

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

It is not a de Polignac number, because 16624861 - 2¹³ = 16616669 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 (16624841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44265 + ... + 44638.

It is an arithmetic number, because the mean of its divisors is an integer number (2400408).

Almost surely, 2^16624861 is an apocalyptic number.

16624861 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16624861 is a deficient number, since it is larger than the sum of its proper divisors (2578403).

16624861 is a wasteful number, since it uses less digits than its factorization.

16624861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88931.

The product of its digits is 13824, while the sum is 34.

The square root of 16624861 is about 4077.3595622658. The cubic root of 16624861 is about 255.2227247987. Note that the first 3 decimals are identical.

The spelling of 16624861 in words is "sixteen million, six hundred twenty-four thousand, eight hundred sixty-one".