1223790065 has 8 divisors (see below), whose sum is σ = 1471942248. Its totient is φ = 976769280.

The previous prime is 1223790023. The next prime is 1223790103. The reversal of 1223790065 is 5600973221.

It can be written as a sum of positive squares in 4 ways, for example, as 24137569 + 1199652496 = 4913^2 + 34636^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1223790065 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280466 + ... + 284795.

It is an arithmetic number, because the mean of its divisors is an integer number (183992781).

Almost surely, 2^1223790065 is an apocalyptic number.

It is an amenable number.

1223790065 is a deficient number, since it is larger than the sum of its proper divisors (248152183).

1223790065 is an equidigital number, since it uses as much as digits as its factorization.

1223790065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565699.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 1223790065 is about 34982.7109441221. The cubic root of 1223790065 is about 1069.6350882473.

The spelling of 1223790065 in words is "one billion, two hundred twenty-three million, seven hundred ninety thousand, sixty-five".