861741 has 18 divisors (see below), whose sum is σ = 1308398. Its totient is φ = 546480.

The previous prime is 861739. The next prime is 861743. The reversal of 861741 is 147168.

It is a happy number.

861741 is a `hidden beast` number, since 8 + 617 + 41 = 666.

861741 is nontrivially palindromic in base 16.

861741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (861739) and next prime (861743).

It can be written as a sum of positive squares in only one way, i.e., 476100 + 385641 = 690^2 + 621^2 .

It is not a de Polignac number, because 861741 - 2¹ = 861739 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861743) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4671 + ... + 4851.

2⁸⁶¹⁷⁴¹ is an apocalyptic number.

It is an amenable number.

861741 is a deficient number, since it is larger than the sum of its proper divisors (446657).

861741 is a wasteful number, since it uses less digits than its factorization.

861741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233 (or 207 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 861741 is about 928.3000592481. The cubic root of 861741 is about 95.1609828225.

The spelling of 861741 in words is "eight hundred sixty-one thousand, seven hundred forty-one".