1226660667 has 16 divisors (see below), whose sum is σ = 1686178560. Its totient is φ = 792627552.

The previous prime is 1226660657. The next prime is 1226660689. The reversal of 1226660667 is 7660666221.

It is not a de Polignac number, because 1226660667 - 2⁸ = 1226660411 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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8184 + ... + 50202.

It is an arithmetic number, because the mean of its divisors is an integer number (105386160).

Almost surely, 2^1226660667 is an apocalyptic number.

1226660667 is a deficient number, since it is larger than the sum of its proper divisors (459517893).

1226660667 is a wasteful number, since it uses less digits than its factorization.

1226660667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42322.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 1226660667 is about 35023.7157794544. The cubic root of 1226660667 is about 1070.4707705127.

The spelling of 1226660667 in words is "one billion, two hundred twenty-six million, six hundred sixty thousand, six hundred sixty-seven".