461861 has 2 divisors, whose sum is σ = 461862. Its totient is φ = 461860.

The previous prime is 461843. The next prime is 461887. The reversal of 461861 is 168164.

It is an a-pointer prime, because the next prime (461887) can be obtained adding 461861 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297025 + 164836 = 545^2 + 406^2 .

It is a cyclic number.

It is not a de Polignac number, because 461861 - 2¹⁴ = 445477 is a prime.

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 461861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (461801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230930 + 230931.

It is an arithmetic number, because the mean of its divisors is an integer number (230931).

2⁴⁶¹⁸⁶¹ is an apocalyptic number.

It is an amenable number.

461861 is a deficient number, since it is larger than the sum of its proper divisors (1).

461861 is an equidigital number, since it uses as much as digits as its factorization.

461861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 26.

The square root of 461861 is about 679.6035609089. The cubic root of 461861 is about 77.2983868229.

The spelling of 461861 in words is "four hundred sixty-one thousand, eight hundred sixty-one".