2745720566 has 8 divisors (see below), whose sum is σ = 4127477664. Its totient is φ = 1369894680.

The previous prime is 2745720563. The next prime is 2745720599. The reversal of 2745720566 is 6650275472.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2745720563) 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, 1481645 + ... + 1483496.

It is an arithmetic number, because the mean of its divisors is an integer number (515934708).

Almost surely, 2^2745720566 is an apocalyptic number.

2745720566 is a deficient number, since it is larger than the sum of its proper divisors (1381757098).

2745720566 is a wasteful number, since it uses less digits than its factorization.

2745720566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2965606.

The product of its (nonzero) digits is 705600, while the sum is 44.

The square root of 2745720566 is about 52399.6237200230. The cubic root of 2745720566 is about 1400.2925521277.

The spelling of 2745720566 in words is "two billion, seven hundred forty-five million, seven hundred twenty thousand, five hundred sixty-six".