857793702246 has 64 divisors (see below), whose sum is σ = 1864086067200. Its totient is φ = 261581654016.

The previous prime is 857793702217. The next prime is 857793702247. The reversal of 857793702246 is 642207397758.

It is a happy number.

It is a super-2 number, since 2×857793702246² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 857793702246.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857793702247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6187275 + ... + 6324393.

It is an arithmetic number, because the mean of its divisors is an integer number (29126344800).

Almost surely, 2^857793702246 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 857793702246, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (932043033600).

857793702246 is an abundant number, since it is smaller than the sum of its proper divisors (1006292364954).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

857793702246 is a wasteful number, since it uses less digits than its factorization.

857793702246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137853.

The product of its (nonzero) digits is 35562240, while the sum is 60.

The spelling of 857793702246 in words is "eight hundred fifty-seven billion, seven hundred ninety-three million, seven hundred two thousand, two hundred forty-six".