2745724857 has 8 divisors (see below), whose sum is σ = 3667735680. Its totient is φ = 1827098640.

The previous prime is 2745724853. The next prime is 2745724867. The reversal of 2745724857 is 7584275472.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2745724857 - 2² = 2745724853 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2745724853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844257 + ... + 847502.

It is an arithmetic number, because the mean of its divisors is an integer number (458466960).

Almost surely, 2^2745724857 is an apocalyptic number.

It is an amenable number.

2745724857 is a deficient number, since it is larger than the sum of its proper divisors (922010823).

2745724857 is a wasteful number, since it uses less digits than its factorization.

2745724857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1692303.

The product of its digits is 4390400, while the sum is 51.

The square root of 2745724857 is about 52399.6646649575. The cubic root of 2745724857 is about 1400.2932815843.

The spelling of 2745724857 in words is "two billion, seven hundred forty-five million, seven hundred twenty-four thousand, eight hundred fifty-seven".