785140 has 24 divisors (see below), whose sum is σ = 1694952. Its totient is φ = 305280.

The previous prime is 785129. The next prime is 785143. The reversal of 785140 is 41587.

It can be written as a sum of positive squares in 4 ways, for example, as 272484 + 512656 = 522^2 + 716^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (785143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210 + ... + 1270.

It is an arithmetic number, because the mean of its divisors is an integer number (70623).

2⁷⁸⁵¹⁴⁰ 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 785140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (847476).

785140 is an abundant number, since it is smaller than the sum of its proper divisors (909812).

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

785140 is a wasteful number, since it uses less digits than its factorization.

785140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107 (or 1105 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 785140 is about 886.0812603819. The cubic root of 785140 is about 92.2533972011.

The spelling of 785140 in words is "seven hundred eighty-five thousand, one hundred forty".