1226617265 has 8 divisors (see below), whose sum is σ = 1476645288. Its totient is φ = 978157440.

The previous prime is 1226617253. The next prime is 1226617267. The reversal of 1226617265 is 5627166221.

It can be written as a sum of positive squares in 4 ways, for example, as 64625521 + 1161991744 = 8039^2 + 34088^2 .

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

It is not a de Polignac number, because 1226617265 - 2¹² = 1226613169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226617267) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 390326 + ... + 393455.

It is an arithmetic number, because the mean of its divisors is an integer number (184580661).

Almost surely, 2^1226617265 is an apocalyptic number.

It is an amenable number.

1226617265 is a deficient number, since it is larger than the sum of its proper divisors (250028023).

1226617265 is an equidigital number, since it uses as much as digits as its factorization.

1226617265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784099.

The product of its digits is 60480, while the sum is 38.

The square root of 1226617265 is about 35023.0961652450. The cubic root of 1226617265 is about 1070.4581451465.

The spelling of 1226617265 in words is "one billion, two hundred twenty-six million, six hundred seventeen thousand, two hundred sixty-five".