81227627 has 8 divisors (see below), whose sum is σ = 88014864. Its totient is φ = 74517408.

The previous prime is 81227623. The next prime is 81227633. The reversal of 81227627 is 72672218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 81227627 - 2² = 81227623 is a prime.

It is a super-2 number, since 2×81227627² = 13195854776102258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (81227623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17048 + ... + 21285.

It is an arithmetic number, because the mean of its divisors is an integer number (11001858).

Almost surely, 2^81227627 is an apocalyptic number.

81227627 is a deficient number, since it is larger than the sum of its proper divisors (6787237).

81227627 is a wasteful number, since it uses less digits than its factorization.

81227627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38509.

The product of its digits is 18816, while the sum is 35.

The square root of 81227627 is about 9012.6370724666. The cubic root of 81227627 is about 433.0797944209.

The spelling of 81227627 in words is "eighty-one million, two hundred twenty-seven thousand, six hundred twenty-seven".