81227363 has 16 divisors (see below), whose sum is σ = 94438080. Its totient is φ = 68428800.

The previous prime is 81227359. The next prime is 81227371. The reversal of 81227363 is 36372218.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 81227363 - 2² = 81227359 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81227303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149873 + ... + 150413.

It is an arithmetic number, because the mean of its divisors is an integer number (5902380).

Almost surely, 2^81227363 is an apocalyptic number.

81227363 is a deficient number, since it is larger than the sum of its proper divisors (13210717).

81227363 is a wasteful number, since it uses less digits than its factorization.

81227363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878.

The product of its digits is 12096, while the sum is 32.

The square root of 81227363 is about 9012.6224263529. The cubic root of 81227363 is about 433.0793252325.

The spelling of 81227363 in words is "eighty-one million, two hundred twenty-seven thousand, three hundred sixty-three".