4066643601 has 24 divisors (see below), whose sum is σ = 6037025280. Its totient is φ = 2636426016.

The previous prime is 4066643597. The next prime is 4066643621. The reversal of 4066643601 is 1063466604.

It is not a de Polignac number, because 4066643601 - 2² = 4066643597 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4066643621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65680 + ... + 111566.

It is an arithmetic number, because the mean of its divisors is an integer number (251542720).

Almost surely, 2^4066643601 is an apocalyptic number.

It is an amenable number.

4066643601 is a deficient number, since it is larger than the sum of its proper divisors (1970381679).

4066643601 is a wasteful number, since it uses less digits than its factorization.

4066643601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46165 (or 46162 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 4066643601 is about 63770.2407161836. The cubic root of 4066643601 is about 1596.1683837362.

The spelling of 4066643601 in words is "four billion, sixty-six million, six hundred forty-three thousand, six hundred one".