464002561 has 4 divisors (see below), whose sum is σ = 506184624. Its totient is φ = 421820500.

The previous prime is 464002543. The next prime is 464002577. The reversal of 464002561 is 165200464.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 464002561 - 2²³ = 455613953 is a prime.

It is a super-2 number, since 2×464002561² = 430596753229117442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (464002961) 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, 21091015 + ... + 21091036.

It is an arithmetic number, because the mean of its divisors is an integer number (126546156).

Almost surely, 2^464002561 is an apocalyptic number.

It is an amenable number.

464002561 is a deficient number, since it is larger than the sum of its proper divisors (42182063).

464002561 is a wasteful number, since it uses less digits than its factorization.

464002561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42182062.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 464002561 is about 21540.7186741761. The cubic root of 464002561 is about 774.1767524498.

The spelling of 464002561 in words is "four hundred sixty-four million, two thousand, five hundred sixty-one".