226656763686 has 96 divisors (see below), whose sum is σ = 521962391808. Its totient is φ = 70957244160.

The previous prime is 226656763681. The next prime is 226656763691. The reversal of 226656763686 is 686367656622.

226656763686 is a `hidden beast` number, since 2 + 2 + 6 + 6 + 567 + 6 + 3 + 68 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (226656763681) and next prime (226656763691).

It is a super-2 number, since 2×226656763686² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226656763681) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8182636 + ... + 8210288.

It is an arithmetic number, because the mean of its divisors is an integer number (5437108248).

Almost surely, 2^226656763686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 226656763686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260981195904).

226656763686 is an abundant number, since it is smaller than the sum of its proper divisors (295305628122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

226656763686 is a wasteful number, since it uses less digits than its factorization.

226656763686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28126 (or 28123 counting only the distinct ones).

The product of its digits is 156764160, while the sum is 63.

The spelling of 226656763686 in words is "two hundred twenty-six billion, six hundred fifty-six million, seven hundred sixty-three thousand, six hundred eighty-six".