1056707765 has 4 divisors (see below), whose sum is σ = 1268049324. Its totient is φ = 845366208.

The previous prime is 1056707761. The next prime is 1056707767. The reversal of 1056707765 is 5677076501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5677076501 = 5051 ⋅1123951.

It can be written as a sum of positive squares in 2 ways, for example, as 622652209 + 434055556 = 24953^2 + 20834^2 .

It is a cyclic number.

It is not a de Polignac number, because 1056707765 - 2² = 1056707761 is a prime.

It is a super-2 number, since 2×1056707765² = 2233262601222590450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056707761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105670772 + ... + 105670781.

It is an arithmetic number, because the mean of its divisors is an integer number (317012331).

Almost surely, 2^1056707765 is an apocalyptic number.

It is an amenable number.

1056707765 is a deficient number, since it is larger than the sum of its proper divisors (211341559).

1056707765 is an equidigital number, since it uses as much as digits as its factorization.

1056707765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211341558.

The product of its (nonzero) digits is 308700, while the sum is 44.

The square root of 1056707765 is about 32507.0417755907. The cubic root of 1056707765 is about 1018.5561286142.

The spelling of 1056707765 in words is "one billion, fifty-six million, seven hundred seven thousand, seven hundred sixty-five".