618806227 has 8 divisors (see below), whose sum is σ = 666631280. Its totient is φ = 571013280.

The previous prime is 618806213. The next prime is 618806233. The reversal of 618806227 is 722608816.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-618806227 is a prime.

It is a super-2 number, since 2×618806227² = 765842293147951058, which contains 22 as substring.

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 618806227.

It is not an unprimeable number, because it can be changed into a prime (618806207) 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, 45049 + ... + 57157.

It is an arithmetic number, because the mean of its divisors is an integer number (83328910).

Almost surely, 2^618806227 is an apocalyptic number.

618806227 is a deficient number, since it is larger than the sum of its proper divisors (47825053).

618806227 is a wasteful number, since it uses less digits than its factorization.

618806227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16053.

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 618806227 is about 24875.8161072155. The cubic root of 618806227 is about 852.1542711638.

The spelling of 618806227 in words is "six hundred eighteen million, eight hundred six thousand, two hundred twenty-seven".