226521685 has 32 divisors (see below), whose sum is σ = 312046560. Its totient is φ = 157307904.

The previous prime is 226521683. The next prime is 226521703. The reversal of 226521685 is 586125622.

It can be written as a sum of positive squares in 16 ways, for example, as 226472401 + 49284 = 15049^2 + 222^2 .

It is not a de Polignac number, because 226521685 - 2¹ = 226521683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (226521683) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 186139 + ... + 187351.

It is an arithmetic number, because the mean of its divisors is an integer number (9751455).

Almost surely, 2^226521685 is an apocalyptic number.

It is an amenable number.

226521685 is a deficient number, since it is larger than the sum of its proper divisors (85524875).

226521685 is a wasteful number, since it uses less digits than its factorization.

226521685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274 (or 1248 counting only the distinct ones).

The product of its digits is 57600, while the sum is 37.

The square root of 226521685 is about 15050.6373619193. The cubic root of 226521685 is about 609.5882601724.

The spelling of 226521685 in words is "two hundred twenty-six million, five hundred twenty-one thousand, six hundred eighty-five".