824668985 has 16 divisors (see below), whose sum is σ = 1141959936. Its totient is φ = 559994688.

The previous prime is 824668961. The next prime is 824669023. The reversal of 824668985 is 589866428.

It is a cyclic number.

It is not a de Polignac number, because 824668985 - 2¹⁸ = 824406841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 824668985.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110774 + ... + 117983.

It is an arithmetic number, because the mean of its divisors is an integer number (71372496).

Almost surely, 2^824668985 is an apocalyptic number.

It is an amenable number.

824668985 is a deficient number, since it is larger than the sum of its proper divisors (317290951).

824668985 is a wasteful number, since it uses less digits than its factorization.

824668985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228872.

The product of its digits is 6635520, while the sum is 56.

The square root of 824668985 is about 28717.0504230501. The cubic root of 824668985 is about 937.7632744439.

The spelling of 824668985 in words is "eight hundred twenty-four million, six hundred sixty-eight thousand, nine hundred eighty-five".