1226666771 has 32 divisors (see below), whose sum is σ = 1449861120. Its totient is φ = 1025892000.

The previous prime is 1226666767. The next prime is 1226666813. The reversal of 1226666771 is 1776666221.

It is a cyclic number.

It is not a de Polignac number, because 1226666771 - 2² = 1226666767 is a prime.

It is a super-2 number, since 2×1226666771² = 3009422734151132882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1226666731) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1482860 + ... + 1483686.

It is an arithmetic number, because the mean of its divisors is an integer number (45308160).

Almost surely, 2^1226666771 is an apocalyptic number.

1226666771 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1226666771 is a deficient number, since it is larger than the sum of its proper divisors (223194349).

1226666771 is a wasteful number, since it uses less digits than its factorization.

1226666771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055.

The product of its digits is 254016, while the sum is 44.

The square root of 1226666771 is about 35023.8029202998. The cubic root of 1226666771 is about 1070.4725461036.

The spelling of 1226666771 in words is "one billion, two hundred twenty-six million, six hundred sixty-six thousand, seven hundred seventy-one".