466651561 has 4 divisors (see below), whose sum is σ = 467215300. Its totient is φ = 466087824.

The previous prime is 466651553. The next prime is 466651589. The reversal of 466651561 is 165156664.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 379041961 + 87609600 = 19469^2 + 9360^2 .

It is a cyclic number.

It is not a de Polignac number, because 466651561 - 2³ = 466651553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (466651541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280626 + ... + 282283.

It is an arithmetic number, because the mean of its divisors is an integer number (116803825).

Almost surely, 2^466651561 is an apocalyptic number.

It is an amenable number.

466651561 is a deficient number, since it is larger than the sum of its proper divisors (563739).

466651561 is an equidigital number, since it uses as much as digits as its factorization.

466651561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563738.

The product of its digits is 129600, while the sum is 40.

The square root of 466651561 is about 21602.1193636180. The cubic root of 466651561 is about 775.6472212541.

The spelling of 466651561 in words is "four hundred sixty-six million, six hundred fifty-one thousand, five hundred sixty-one".