861701 has 2 divisors, whose sum is σ = 861702. Its totient is φ = 861700.

The previous prime is 861691. The next prime is 861703. The reversal of 861701 is 107168.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 857476 + 4225 = 926^2 + 65^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-861701 is a prime.

It is a super-2 number, since 2×861701² = 1485057226802, which contains 22 as substring.

Together with 861703, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430850 + 430851.

It is an arithmetic number, because the mean of its divisors is an integer number (430851).

2⁸⁶¹⁷⁰¹ is an apocalyptic number.

It is an amenable number.

861701 is a deficient number, since it is larger than the sum of its proper divisors (1).

861701 is an equidigital number, since it uses as much as digits as its factorization.

861701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 861701 is about 928.2785142402. The cubic root of 861701 is about 95.1595104164.

Adding to 861701 its reverse (107168), we get a palindrome (968869).

The spelling of 861701 in words is "eight hundred sixty-one thousand, seven hundred one".