82227681 has 24 divisors (see below), whose sum is σ = 121193280. Its totient is φ = 53714016.

The previous prime is 82227667. The next prime is 82227683. The reversal of 82227681 is 18672228.

It is a happy number.

It is not a de Polignac number, because 82227681 - 2⁶ = 82227617 is a prime.

It is a super-2 number, since 2×82227681² = 13522783045275522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (82227683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98775 + ... + 99603.

It is an arithmetic number, because the mean of its divisors is an integer number (5049720).

Almost surely, 2^82227681 is an apocalyptic number.

It is an amenable number.

82227681 is a deficient number, since it is larger than the sum of its proper divisors (38965599).

82227681 is a wasteful number, since it uses less digits than its factorization.

82227681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045 (or 1042 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 82227681 is about 9067.9480038209. The cubic root of 82227681 is about 434.8498728869.

The spelling of 82227681 in words is "eighty-two million, two hundred twenty-seven thousand, six hundred eighty-one".