464343561 has 24 divisors (see below), whose sum is σ = 738953280. Its totient is φ = 278628000.

The previous prime is 464343557. The next prime is 464343569. The reversal of 464343561 is 165343464.

464343561 is a `hidden beast` number, since 4 + 64 + 34 + 3 + 561 = 666.

It is not a de Polignac number, because 464343561 - 2² = 464343557 is a prime.

It is a super-2 number, since 2×464343561² = 431229885284321442, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (464343569) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13221 + ... + 33218.

It is an arithmetic number, because the mean of its divisors is an integer number (30789720).

Almost surely, 2^464343561 is an apocalyptic number.

It is an amenable number.

464343561 is a deficient number, since it is larger than the sum of its proper divisors (274609719).

464343561 is a wasteful number, since it uses less digits than its factorization.

464343561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46557 (or 46554 counting only the distinct ones).

The product of its digits is 103680, while the sum is 36.

The square root of 464343561 is about 21548.6324624093. The cubic root of 464343561 is about 774.3663560214.

The spelling of 464343561 in words is "four hundred sixty-four million, three hundred forty-three thousand, five hundred sixty-one".