6642472201 has 8 divisors (see below), whose sum is σ = 6679717704. Its totient is φ = 6605262720.

The previous prime is 6642472159. The next prime is 6642472211. The reversal of 6642472201 is 1022742466.

It can be written as a sum of positive squares in 4 ways, for example, as 3442872976 + 3199599225 = 58676^2 + 56565^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6642472201 - 2²³ = 6634083593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6642472211) 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, 416311 + ... + 431971.

It is an arithmetic number, because the mean of its divisors is an integer number (834964713).

Almost surely, 2^6642472201 is an apocalyptic number.

It is an amenable number.

6642472201 is a deficient number, since it is larger than the sum of its proper divisors (37245503).

6642472201 is a wasteful number, since it uses less digits than its factorization.

6642472201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18011.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 6642472201 is about 81501.3631849186. The cubic root of 6642472201 is about 1879.7925115247.

The spelling of 6642472201 in words is "six billion, six hundred forty-two million, four hundred seventy-two thousand, two hundred one".