1226000665 has 16 divisors (see below), whose sum is σ = 1543380480. Its totient is φ = 933634240.

The previous prime is 1226000663. The next prime is 1226000681. The reversal of 1226000665 is 5660006221.

It is not a de Polignac number, because 1226000665 - 2¹ = 1226000663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1226000663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49249 + ... + 69838.

It is an arithmetic number, because the mean of its divisors is an integer number (96461280).

Almost surely, 2^1226000665 is an apocalyptic number.

It is an amenable number.

1226000665 is a deficient number, since it is larger than the sum of its proper divisors (317379815).

1226000665 is a wasteful number, since it uses less digits than its factorization.

1226000665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119192.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1226000665 is about 35014.2922961467. The cubic root of 1226000665 is about 1070.2787479431.

Adding to 1226000665 its reverse (5660006221), we get a palindrome (6886006886).

The spelling of 1226000665 in words is "one billion, two hundred twenty-six million, six hundred sixty-five", and thus it is an aban number.