6642630337 has 32 divisors (see below), whose sum is σ = 8474561280. Its totient is φ = 5068707840.

The previous prime is 6642630287. The next prime is 6642630343. The reversal of 6642630337 is 7330362466.

It is not a de Polignac number, because 6642630337 - 2⁷ = 6642630209 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 6642630337.

It is not an unprimeable number, because it can be changed into a prime (6642630347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1709637 + ... + 1713517.

It is an arithmetic number, because the mean of its divisors is an integer number (264830040).

Almost surely, 2^6642630337 is an apocalyptic number.

It is an amenable number.

6642630337 is a deficient number, since it is larger than the sum of its proper divisors (1831930943).

6642630337 is a wasteful number, since it uses less digits than its factorization.

6642630337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4681.

The product of its (nonzero) digits is 326592, while the sum is 40.

The square root of 6642630337 is about 81502.3333224270. Note that the first 4 decimals coincide. The cubic root of 6642630337 is about 1879.8074286871.

The spelling of 6642630337 in words is "six billion, six hundred forty-two million, six hundred thirty thousand, three hundred thirty-seven".