3457728566 has 32 divisors (see below), whose sum is σ = 5802347520. Its totient is φ = 1535760000.

The previous prime is 3457728557. The next prime is 3457728569. The reversal of 3457728566 is 6658277543.

It is a happy number.

It is a super-2 number, since 2×3457728566² = 23911773672264832712, which contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3457728569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165191 + ... + 184941.

It is an arithmetic number, because the mean of its divisors is an integer number (181323360).

Almost surely, 2^3457728566 is an apocalyptic number.

3457728566 is a deficient number, since it is larger than the sum of its proper divisors (2344618954).

3457728566 is a wasteful number, since it uses less digits than its factorization.

3457728566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20060.

The product of its digits is 8467200, while the sum is 53.

The square root of 3457728566 is about 58802.4537413193. The cubic root of 3457728566 is about 1512.1572846071.

The spelling of 3457728566 in words is "three billion, four hundred fifty-seven million, seven hundred twenty-eight thousand, five hundred sixty-six".