857534690 has 8 divisors (see below), whose sum is σ = 1543562460. Its totient is φ = 343013872.

The previous prime is 857534677. The next prime is 857534731. The reversal of 857534690 is 96435758.

857534690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 794506969 + 63027721 = 28187^2 + 7939^2 .

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

It is a super-2 number, since 2×857534690² = 1470731489106792200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42876725 + ... + 42876744.

Almost surely, 2^857534690 is an apocalyptic number.

857534690 is a deficient number, since it is larger than the sum of its proper divisors (686027770).

857534690 is a wasteful number, since it uses less digits than its factorization.

857534690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85753476.

The product of its (nonzero) digits is 907200, while the sum is 47.

The square root of 857534690 is about 29283.6932438516. The cubic root of 857534690 is about 950.0589769480.

The spelling of 857534690 in words is "eight hundred fifty-seven million, five hundred thirty-four thousand, six hundred ninety".