465648661 has 2 divisors, whose sum is σ = 465648662. Its totient is φ = 465648660.

The previous prime is 465648629. The next prime is 465648671. The reversal of 465648661 is 166846564.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 411846436 + 53802225 = 20294^2 + 7335^2 .

It is a cyclic number.

It is not a de Polignac number, because 465648661 - 2⁵ = 465648629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (465648671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 232824330 + 232824331.

It is an arithmetic number, because the mean of its divisors is an integer number (232824331).

Almost surely, 2^465648661 is an apocalyptic number.

It is an amenable number.

465648661 is a deficient number, since it is larger than the sum of its proper divisors (1).

465648661 is an equidigital number, since it uses as much as digits as its factorization.

465648661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 829440, while the sum is 46.

The square root of 465648661 is about 21578.8938780467. The cubic root of 465648661 is about 775.0911643018.

It can be divided in two parts, 46564 and 8661, that added together give a square (55225 = 235²).

The spelling of 465648661 in words is "four hundred sixty-five million, six hundred forty-eight thousand, six hundred sixty-one".