6646662201 has 8 divisors (see below), whose sum is σ = 8863201600. Its totient is φ = 4430615472.

The previous prime is 6646662181. The next prime is 6646662283. The reversal of 6646662201 is 1022666466.

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

It is not a de Polignac number, because 6646662201 - 2²⁵ = 6613107769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6646662201.

It is not an unprimeable number, because it can be changed into a prime (6646662101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90445 + ... + 146538.

It is an arithmetic number, because the mean of its divisors is an integer number (1107900200).

Almost surely, 2^6646662201 is an apocalyptic number.

It is an amenable number.

6646662201 is a deficient number, since it is larger than the sum of its proper divisors (2216539399).

6646662201 is a wasteful number, since it uses less digits than its factorization.

6646662201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246335.

The product of its (nonzero) digits is 124416, while the sum is 39.

The square root of 6646662201 is about 81527.0642240968. The cubic root of 6646662201 is about 1880.1876794112.

The spelling of 6646662201 in words is "six billion, six hundred forty-six million, six hundred sixty-two thousand, two hundred one".