641650207 has 8 divisors (see below), whose sum is σ = 701061840. Its totient is φ = 582418560.

The previous prime is 641650187. The next prime is 641650211. The reversal of 641650207 is 702056146.

It is a happy number.

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 641650207 - 2¹⁵ = 641617439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (641656207) 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, 37482 + ... + 51847.

It is an arithmetic number, because the mean of its divisors is an integer number (87632730).

Almost surely, 2^641650207 is an apocalyptic number.

641650207 is a deficient number, since it is larger than the sum of its proper divisors (59411633).

641650207 is a wasteful number, since it uses less digits than its factorization.

641650207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89993.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 641650207 is about 25330.8153639002. The cubic root of 641650207 is about 862.5139201562.

The spelling of 641650207 in words is "six hundred forty-one million, six hundred fifty thousand, two hundred seven".