985745690 has 8 divisors (see below), whose sum is σ = 1774342260. Its totient is φ = 394298272.

The previous prime is 985745689. The next prime is 985745743. The reversal of 985745690 is 96547589.

It can be written as a sum of positive squares in 2 ways, for example, as 972254761 + 13490929 = 31181^2 + 3673^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×985745690² = 1943389130707152200, which contains 22 as substring.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 49287275 + ... + 49287294.

Almost surely, 2^985745690 is an apocalyptic number.

985745690 is a deficient number, since it is larger than the sum of its proper divisors (788596570).

985745690 is a wasteful number, since it uses less digits than its factorization.

985745690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98574576.

The product of its (nonzero) digits is 2721600, while the sum is 53.

The square root of 985745690 is about 31396.5872349209. The cubic root of 985745690 is about 995.2258066841.

The spelling of 985745690 in words is "nine hundred eighty-five million, seven hundred forty-five thousand, six hundred ninety".