4206665644 has 24 divisors (see below), whose sum is σ = 7651652400. Its totient is φ = 2021167680.

The previous prime is 4206665633. The next prime is 4206665653. The reversal of 4206665644 is 4465666024.

It is a self number, because there is not a number n which added to its sum of digits gives 4206665644.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61459 + ... + 110410.

It is an arithmetic number, because the mean of its divisors is an integer number (318818850).

Almost surely, 2^4206665644 is an apocalyptic number.

It is an amenable number.

4206665644 is a deficient number, since it is larger than the sum of its proper divisors (3444986756).

4206665644 is a wasteful number, since it uses less digits than its factorization.

4206665644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172113 (or 172111 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 43.

The square root of 4206665644 is about 64858.8131559621. The cubic root of 4206665644 is about 1614.2817298836.

The spelling of 4206665644 in words is "four billion, two hundred six million, six hundred sixty-five thousand, six hundred forty-four".