226635621 has 8 divisors (see below), whose sum is σ = 306437184. Its totient is φ = 148962240.

The previous prime is 226635613. The next prime is 226635631. The reversal of 226635621 is 126536622.

226635621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 226635621 - 2³ = 226635613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226635631) 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, 531796 + ... + 532221.

It is an arithmetic number, because the mean of its divisors is an integer number (38304648).

Almost surely, 2^226635621 is an apocalyptic number.

It is an amenable number.

226635621 is a deficient number, since it is larger than the sum of its proper divisors (79801563).

226635621 is a wasteful number, since it uses less digits than its factorization.

226635621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064091.

The product of its digits is 25920, while the sum is 33.

The square root of 226635621 is about 15054.4219749547. The cubic root of 226635621 is about 609.6904467197.

The spelling of 226635621 in words is "two hundred twenty-six million, six hundred thirty-five thousand, six hundred twenty-one".