65230581 has 16 divisors (see below), whose sum is σ = 99175104. Its totient is φ = 37780224.

The previous prime is 65230573. The next prime is 65230609. The reversal of 65230581 is 18503256.

It is not a de Polignac number, because 65230581 - 2³ = 65230573 is a prime.

It is a super-2 number, since 2×65230581² = 8510057395195122, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65230531) 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 15 ways as a sum of consecutive naturals, for example, 48531 + ... + 49856.

It is an arithmetic number, because the mean of its divisors is an integer number (6198444).

Almost surely, 2^65230581 is an apocalyptic number.

It is an amenable number.

65230581 is a deficient number, since it is larger than the sum of its proper divisors (33944523).

65230581 is a wasteful number, since it uses less digits than its factorization.

65230581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98420.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 65230581 is about 8076.5451153324. The cubic root of 65230581 is about 402.5474521939.

The spelling of 65230581 in words is "sixty-five million, two hundred thirty thousand, five hundred eighty-one".