623224985 has 24 divisors (see below), whose sum is σ = 793836360. Its totient is φ = 469628928.

The previous prime is 623224963. The next prime is 623224999. The reversal of 623224985 is 589422326.

It can be written as a sum of positive squares in 4 ways, for example, as 123121216 + 500103769 = 11096^2 + 22363^2 .

It is not a de Polignac number, because 623224985 - 2¹⁴ = 623208601 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 347471 + ... + 349259.

It is an arithmetic number, because the mean of its divisors is an integer number (33076515).

Almost surely, 2^623224985 is an apocalyptic number.

It is an amenable number.

623224985 is a deficient number, since it is larger than the sum of its proper divisors (170611375).

623224985 is a wasteful number, since it uses less digits than its factorization.

623224985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025 (or 2006 counting only the distinct ones).

The product of its digits is 207360, while the sum is 41.

The square root of 623224985 is about 24964.4744587183. The cubic root of 623224985 is about 854.1778104383.

The spelling of 623224985 in words is "six hundred twenty-three million, two hundred twenty-four thousand, nine hundred eighty-five".