464472661 has 4 divisors (see below), whose sum is σ = 464616172. Its totient is φ = 464329152.

The previous prime is 464472637. The next prime is 464472667. The reversal of 464472661 is 166274464.

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 409252900 + 55219761 = 20230^2 + 7431^2 .

It is a cyclic number.

It is not a de Polignac number, because 464472661 - 2¹⁵ = 464439893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (464472667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66786 + ... + 73411.

It is an arithmetic number, because the mean of its divisors is an integer number (116154043).

Almost surely, 2^464472661 is an apocalyptic number.

It is an amenable number.

464472661 is a deficient number, since it is larger than the sum of its proper divisors (143511).

464472661 is a wasteful number, since it uses less digits than its factorization.

464472661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143510.

The product of its digits is 193536, while the sum is 40.

The square root of 464472661 is about 21551.6278039502. The cubic root of 464472661 is about 774.4381142636.

The spelling of 464472661 in words is "four hundred sixty-four million, four hundred seventy-two thousand, six hundred sixty-one".