65730229 has 4 divisors (see below), whose sum is σ = 66970476. Its totient is φ = 64489984.

The previous prime is 65730221. The next prime is 65730233. The reversal of 65730229 is 92203756.

It is a happy number.

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 45927729 + 19802500 = 6777^2 + 4450^2 .

It is a cyclic number.

It is not a de Polignac number, because 65730229 - 2³ = 65730221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 65730194 and 65730203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65730221) 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, 620044 + ... + 620149.

It is an arithmetic number, because the mean of its divisors is an integer number (16742619).

Almost surely, 2^65730229 is an apocalyptic number.

It is an amenable number.

65730229 is a deficient number, since it is larger than the sum of its proper divisors (1240247).

65730229 is a wasteful number, since it uses less digits than its factorization.

65730229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240246.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 65730229 is about 8107.4181463645. The cubic root of 65730229 is about 403.5726393693.

The spelling of 65730229 in words is "sixty-five million, seven hundred thirty thousand, two hundred twenty-nine".