635220227 has 4 divisors (see below), whose sum is σ = 639483600. Its totient is φ = 630956856.

The previous prime is 635220203. The next prime is 635220239. The reversal of 635220227 is 722022536.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 635220227 - 2¹⁰ = 635219203 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 635220227.

It is not an unprimeable number, because it can be changed into a prime (635220127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2131463 + ... + 2131760.

It is an arithmetic number, because the mean of its divisors is an integer number (159870900).

Almost surely, 2^635220227 is an apocalyptic number.

635220227 is a deficient number, since it is larger than the sum of its proper divisors (4263373).

635220227 is a wasteful number, since it uses less digits than its factorization.

635220227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4263372.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 635220227 is about 25203.5756788595. The cubic root of 635220227 is about 859.6231569614.

The spelling of 635220227 in words is "six hundred thirty-five million, two hundred twenty thousand, two hundred twenty-seven".