7057565749 has 4 divisors (see below), whose sum is σ = 7600455436. Its totient is φ = 6514676064.

The previous prime is 7057565747. The next prime is 7057565783. The reversal of 7057565749 is 9475657507.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 635947524 + 6421618225 = 25218^2 + 80135^2 .

It is not a de Polignac number, because 7057565749 - 2¹ = 7057565747 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7057565749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7057565747) 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, 271444824 + ... + 271444849.

It is an arithmetic number, because the mean of its divisors is an integer number (1900113859).

Almost surely, 2^7057565749 is an apocalyptic number.

It is an amenable number.

7057565749 is a deficient number, since it is larger than the sum of its proper divisors (542889687).

7057565749 is a wasteful number, since it uses less digits than its factorization.

7057565749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542889686.

The product of its (nonzero) digits is 9261000, while the sum is 55.

The square root of 7057565749 is about 84009.3194175503. The cubic root of 7057565749 is about 1918.1606506761.

The spelling of 7057565749 in words is "seven billion, fifty-seven million, five hundred sixty-five thousand, seven hundred forty-nine".