1222707764 has 6 divisors (see below), whose sum is σ = 2139738594. Its totient is φ = 611353880.

The previous prime is 1222707763. The next prime is 1222707767. The reversal of 1222707764 is 4677072221.

It can be written as a sum of positive squares in only one way, i.e., 1204645264 + 18062500 = 34708^2 + 4250^2 .

It is a super-2 number, since 2×1222707764² = 2990028552291759392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222707763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152838467 + ... + 152838474.

It is an arithmetic number, because the mean of its divisors is an integer number (356623099).

Almost surely, 2^1222707764 is an apocalyptic number.

It is an amenable number.

1222707764 is a deficient number, since it is larger than the sum of its proper divisors (917030830).

1222707764 is a wasteful number, since it uses less digits than its factorization.

1222707764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305676945 (or 305676943 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 1222707764 is about 34967.2384382868. The cubic root of 1222707764 is about 1069.3196723382.

Adding to 1222707764 its reverse (4677072221), we get a palindrome (5899779985).

The spelling of 1222707764 in words is "one billion, two hundred twenty-two million, seven hundred seven thousand, seven hundred sixty-four".