851707854 has 48 divisors (see below), whose sum is σ = 1960882560. Its totient is φ = 267174720.

The previous prime is 851707853. The next prime is 851707877. The reversal of 851707854 is 458707158.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851707853) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83619 + ... + 93249.

It is an arithmetic number, because the mean of its divisors is an integer number (40851720).

Almost surely, 2^851707854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 851707854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (980441280).

851707854 is an abundant number, since it is smaller than the sum of its proper divisors (1109174706).

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

851707854 is a wasteful number, since it uses less digits than its factorization.

851707854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9690 (or 9653 counting only the distinct ones).

The product of its (nonzero) digits is 313600, while the sum is 45.

The square root of 851707854 is about 29184.0342310655. The cubic root of 851707854 is about 947.9022424967.

The spelling of 851707854 in words is "eight hundred fifty-one million, seven hundred seven thousand, eight hundred fifty-four".