465605821 has 2 divisors, whose sum is σ = 465605822. Its totient is φ = 465605820.

The previous prime is 465605797. The next prime is 465605827. The reversal of 465605821 is 128506564.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 241025625 + 224580196 = 15525^2 + 14986^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-465605821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (465605827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232802910 + 232802911.

It is an arithmetic number, because the mean of its divisors is an integer number (232802911).

Almost surely, 2^465605821 is an apocalyptic number.

It is an amenable number.

465605821 is a deficient number, since it is larger than the sum of its proper divisors (1).

465605821 is an equidigital number, since it uses as much as digits as its factorization.

465605821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 465605821 is about 21577.9012186079. The cubic root of 465605821 is about 775.0673939311.

The spelling of 465605821 in words is "four hundred sixty-five million, six hundred five thousand, eight hundred twenty-one".