465781 has 2 divisors, whose sum is σ = 465782. Its totient is φ = 465780.

The previous prime is 465761. The next prime is 465797. The reversal of 465781 is 187564.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 285156 + 180625 = 534^2 + 425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-465781 is a prime.

It is a super-2 number, since 2×465781² = 433903879922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (465701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232890 + 232891.

It is an arithmetic number, because the mean of its divisors is an integer number (232891).

2⁴⁶⁵⁷⁸¹ is an apocalyptic number.

It is an amenable number.

465781 is a deficient number, since it is larger than the sum of its proper divisors (1).

465781 is an equidigital number, since it uses as much as digits as its factorization.

465781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 31.

The square root of 465781 is about 682.4815015808. The cubic root of 465781 is about 77.5164585232.

The spelling of 465781 in words is "four hundred sixty-five thousand, seven hundred eighty-one".