985053566 has 24 divisors (see below), whose sum is σ = 1719927576. Its totient is φ = 421893360.

The previous prime is 985053539. The next prime is 985053569. The reversal of 985053566 is 665350589.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 985053566.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985053569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 248621 + ... + 252551.

It is an arithmetic number, because the mean of its divisors is an integer number (71663649).

Almost surely, 2^985053566 is an apocalyptic number.

985053566 is a deficient number, since it is larger than the sum of its proper divisors (734874010).

985053566 is a wasteful number, since it uses less digits than its factorization.

985053566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6504 (or 6497 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 47.

The square root of 985053566 is about 31385.5630186874. The cubic root of 985053566 is about 994.9928253820.

The spelling of 985053566 in words is "nine hundred eighty-five million, fifty-three thousand, five hundred sixty-six".