1056766649 has 2 divisors, whose sum is σ = 1056766650. Its totient is φ = 1056766648.

The previous prime is 1056766603. The next prime is 1056766673. The reversal of 1056766649 is 9466676501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 823288249 + 233478400 = 28693^2 + 15280^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1056766649 is a prime.

It is a super-2 number, since 2×1056766649² = 2233511500877378402, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1056766597 and 1056766606.

It is not a weakly prime, because it can be changed into another prime (1056766049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528383324 + 528383325.

It is an arithmetic number, because the mean of its divisors is an integer number (528383325).

Almost surely, 2^1056766649 is an apocalyptic number.

It is an amenable number.

1056766649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1056766649 is an equidigital number, since it uses as much as digits as its factorization.

1056766649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 50.

The square root of 1056766649 is about 32507.9474744254. The cubic root of 1056766649 is about 1018.5750476086.

The spelling of 1056766649 in words is "one billion, fifty-six million, seven hundred sixty-six thousand, six hundred forty-nine".