4027345666 has 8 divisors (see below), whose sum is σ = 6043112460. Its totient is φ = 2012974848.

The previous prime is 4027345649. The next prime is 4027345669. The reversal of 4027345666 is 6665437204.

It can be written as a sum of positive squares in 2 ways, for example, as 3357623025 + 669722641 = 57945^2 + 25879^2 .

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

It is a super-2 number, since 2×4027345666² = 32439026226897967112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4027345669) 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, 341751 + ... + 353338.

Almost surely, 2^4027345666 is an apocalyptic number.

4027345666 is a deficient number, since it is larger than the sum of its proper divisors (2015766794).

4027345666 is a wasteful number, since it uses less digits than its factorization.

4027345666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697988.

The product of its (nonzero) digits is 725760, while the sum is 43.

The square root of 4027345666 is about 63461.3714475192. The cubic root of 4027345666 is about 1591.0102180808.

The spelling of 4027345666 in words is "four billion, twenty-seven million, three hundred forty-five thousand, six hundred sixty-six".