1226660617 has 16 divisors (see below), whose sum is σ = 1510617472. Its totient is φ = 969978240.

The previous prime is 1226660597. The next prime is 1226660641. The reversal of 1226660617 is 7160666221.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1226660617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1226660657) 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, 226738 + ... + 232084.

It is an arithmetic number, because the mean of its divisors is an integer number (94413592).

Almost surely, 2^1226660617 is an apocalyptic number.

It is an amenable number.

1226660617 is a deficient number, since it is larger than the sum of its proper divisors (283956855).

1226660617 is a wasteful number, since it uses less digits than its factorization.

1226660617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7888.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 1226660617 is about 35023.7150656523. The cubic root of 1226660617 is about 1070.4707559681.

The spelling of 1226660617 in words is "one billion, two hundred twenty-six million, six hundred sixty thousand, six hundred seventeen".