227681685 has 160 divisors (see below), whose sum is σ = 522720000. Its totient is φ = 93985920.

The previous prime is 227681659. The next prime is 227681687. The reversal of 227681685 is 586186722.

It is not a de Polignac number, because 227681685 - 2⁵ = 227681653 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 227681685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (227681687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 1527991 + ... + 1528139.

It is an arithmetic number, because the mean of its divisors is an integer number (3267000).

Almost surely, 2^227681685 is an apocalyptic number.

It is an amenable number.

227681685 is an abundant number, since it is smaller than the sum of its proper divisors (295038315).

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

227681685 is a wasteful number, since it uses less digits than its factorization.

227681685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 175 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 227681685 is about 15089.1247261065. The cubic root of 227681685 is about 610.6270404323.

The spelling of 227681685 in words is "two hundred twenty-seven million, six hundred eighty-one thousand, six hundred eighty-five".