857689606 has 4 divisors (see below), whose sum is σ = 1286534412. Its totient is φ = 428844802.

The previous prime is 857689603. The next prime is 857689663. The reversal of 857689606 is 606986758.

It is a happy number.

857689606 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857689603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214422400 + ... + 214422403.

It is an arithmetic number, because the mean of its divisors is an integer number (321633603).

Almost surely, 2^857689606 is an apocalyptic number.

857689606 is a deficient number, since it is larger than the sum of its proper divisors (428844806).

857689606 is a wasteful number, since it uses less digits than its factorization.

857689606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428844805.

The product of its (nonzero) digits is 4354560, while the sum is 55.

The square root of 857689606 is about 29286.3382142596. The cubic root of 857689606 is about 950.1161837589.

The spelling of 857689606 in words is "eight hundred fifty-seven million, six hundred eighty-nine thousand, six hundred six".