1056668733 has 18 divisors (see below), whose sum is σ = 1584932414. Its totient is φ = 704441448.

The previous prime is 1056668729. The next prime is 1056668741. The reversal of 1056668733 is 3378666501.

It can be written as a sum of positive squares in only one way, i.e., 957407364 + 99261369 = 30942^2 + 9963^2 .

It is not a de Polignac number, because 1056668733 - 2² = 1056668729 is a prime.

It is a super-2 number, since 2×1056668733² = 2233097622599650578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056668633) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 73966 + ... + 87087.

Almost surely, 2^1056668733 is an apocalyptic number.

It is an amenable number.

1056668733 is a deficient number, since it is larger than the sum of its proper divisors (528263681).

1056668733 is an frugal number, since it uses more digits than its factorization.

1056668733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161077 (or 161056 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 1056668733 is about 32506.4414078195. The cubic root of 1056668733 is about 1018.5435875334.

The spelling of 1056668733 in words is "one billion, fifty-six million, six hundred sixty-eight thousand, seven hundred thirty-three".