985757 has 4 divisors (see below), whose sum is σ = 1028640. Its totient is φ = 942876.

The previous prime is 985741. The next prime is 985759. The reversal of 985757 is 757589.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 985757 - 2⁴ = 985741 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 (985759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21407 + ... + 21452.

It is an arithmetic number, because the mean of its divisors is an integer number (257160).

2⁹⁸⁵⁷⁵⁷ is an apocalyptic number.

It is an amenable number.

985757 is a deficient number, since it is larger than the sum of its proper divisors (42883).

985757 is a wasteful number, since it uses less digits than its factorization.

985757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42882.

The product of its digits is 88200, while the sum is 41.

The square root of 985757 is about 992.8529599090. The cubic root of 985757 is about 99.5229612926.

The spelling of 985757 in words is "nine hundred eighty-five thousand, seven hundred fifty-seven".