850740 has 48 divisors (see below), whose sum is σ = 2600640. Its totient is φ = 206080.

The previous prime is 850727. The next prime is 850753. The reversal of 850740 is 47058.

It is an interprime number because it is at equal distance from previous prime (850727) and next prime (850753).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 850740.

It is a congruent number.

It is an unprimeable number.

850740 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16 + ... + 1304.

It is an arithmetic number, because the mean of its divisors is an integer number (54180).

2⁸⁵⁰⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 850740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1300320).

850740 is an abundant number, since it is smaller than the sum of its proper divisors (1749900).

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

850740 is a wasteful number, since it uses less digits than its factorization.

850740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1312 (or 1310 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 850740 is about 922.3556797678. The cubic root of 850740 is about 94.7543050979.

Adding to 850740 its reverse (47058), we get a palindrome (897798).

The spelling of 850740 in words is "eight hundred fifty thousand, seven hundred forty".