850529690 has 32 divisors (see below), whose sum is σ = 1613656080. Its totient is φ = 322276864.

The previous prime is 850529689. The next prime is 850529711. The reversal of 850529690 is 96925058.

It can be written as a sum of positive squares in 8 ways, for example, as 417098929 + 433430761 = 20423^2 + 20819^2 .

It is a super-2 number, since 2×850529690² = 1446801507142992200, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

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, 12299 + ... + 43038.

Almost surely, 2^850529690 is an apocalyptic number.

850529690 is a deficient number, since it is larger than the sum of its proper divisors (763126390).

850529690 is a wasteful number, since it uses less digits than its factorization.

850529690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55426.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 850529690 is about 29163.8421679997. The cubic root of 850529690 is about 947.4649643712.

The spelling of 850529690 in words is "eight hundred fifty million, five hundred twenty-nine thousand, six hundred ninety".