983664853 has 4 divisors (see below), whose sum is σ = 997139788. Its totient is φ = 970189920.

The previous prime is 983664839. The next prime is 983664881. The reversal of 983664853 is 358466389.

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 282845124 + 700819729 = 16818^2 + 26473^2 .

It is a cyclic number.

It is not a de Polignac number, because 983664853 - 2⁵ = 983664821 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 983664853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (983664653) 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, 6737358 + ... + 6737503.

It is an arithmetic number, because the mean of its divisors is an integer number (249284947).

Almost surely, 2^983664853 is an apocalyptic number.

It is an amenable number.

983664853 is a deficient number, since it is larger than the sum of its proper divisors (13474935).

983664853 is a wasteful number, since it uses less digits than its factorization.

983664853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13474934.

The product of its digits is 3732480, while the sum is 52.

The square root of 983664853 is about 31363.4317797017. The cubic root of 983664853 is about 994.5250304126.

The spelling of 983664853 in words is "nine hundred eighty-three million, six hundred sixty-four thousand, eight hundred fifty-three".