465739561 has 9 divisors (see below), whose sum is σ = 541954461. Its totient is φ = 399075852.

The previous prime is 465739559. The next prime is 465739597. The reversal of 465739561 is 165937564.

The square root of 465739561 is 21581.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 465739561 - 2¹ = 465739559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (465739511) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 149526 + ... + 152608.

Almost surely, 2^465739561 is an apocalyptic number.

465739561 is the 21581-st square number.

465739561 is the 10791-st centered octagonal number.

It is an amenable number.

465739561 is a deficient number, since it is larger than the sum of its proper divisors (76214900).

465739561 is an frugal number, since it uses more digits than its factorization.

465739561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6180 (or 3090 counting only the distinct ones).

The product of its digits is 680400, while the sum is 46.

The cubic root of 465739561 is about 775.1415966046.

The spelling of 465739561 in words is "four hundred sixty-five million, seven hundred thirty-nine thousand, five hundred sixty-one".