16624085 has 4 divisors (see below), whose sum is σ = 19948908. Its totient is φ = 13299264.

The previous prime is 16624081. The next prime is 16624093. The reversal of 16624085 is 58042661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7612081 + 9012004 = 2759^2 + 3002^2 .

It is a cyclic number.

It is not a de Polignac number, because 16624085 - 2² = 16624081 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 (16624081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1662404 + ... + 1662413.

It is an arithmetic number, because the mean of its divisors is an integer number (4987227).

Almost surely, 2^16624085 is an apocalyptic number.

It is an amenable number.

16624085 is a deficient number, since it is larger than the sum of its proper divisors (3324823).

16624085 is an equidigital number, since it uses as much as digits as its factorization.

16624085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3324822.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 16624085 is about 4077.2644015320. The cubic root of 16624085 is about 255.2187537196.

The spelling of 16624085 in words is "sixteen million, six hundred twenty-four thousand, eighty-five".