1336220069 has 4 divisors (see below), whose sum is σ = 1336295244. Its totient is φ = 1336144896.

The previous prime is 1336220051. The next prime is 1336220089. The reversal of 1336220069 is 9600226331.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9600226331 = 1949 ⋅4925719.

It can be written as a sum of positive squares in 2 ways, for example, as 715562500 + 620657569 = 26750^2 + 24913^2 .

It is a cyclic number.

It is not a de Polignac number, because 1336220069 - 2²⁰ = 1335171493 is a prime.

It is a super-2 number, since 2×1336220069² = 3570968145596729522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1336220089) 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, 5669 + ... + 52005.

It is an arithmetic number, because the mean of its divisors is an integer number (334073811).

Almost surely, 2^1336220069 is an apocalyptic number.

It is an amenable number.

1336220069 is a deficient number, since it is larger than the sum of its proper divisors (75175).

1336220069 is an equidigital number, since it uses as much as digits as its factorization.

1336220069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75174.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 1336220069 is about 36554.3440510153. The cubic root of 1336220069 is about 1101.4361596715.

The spelling of 1336220069 in words is "one billion, three hundred thirty-six million, two hundred twenty thousand, sixty-nine".