81448627 has 8 divisors (see below), whose sum is σ = 88043760. Its totient is φ = 74900640.

The previous prime is 81448613. The next prime is 81448637. The reversal of 81448627 is 72684418.

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 81448627 - 2¹⁹ = 80924339 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 81448627.

It is not an unprimeable number, because it can be changed into a prime (81448637) 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, 8149 + ... + 15142.

It is an arithmetic number, because the mean of its divisors is an integer number (11005470).

Almost surely, 2^81448627 is an apocalyptic number.

81448627 is a deficient number, since it is larger than the sum of its proper divisors (6595133).

81448627 is a wasteful number, since it uses less digits than its factorization.

81448627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23573.

The product of its digits is 86016, while the sum is 40.

The square root of 81448627 is about 9024.8893068004. The cubic root of 81448627 is about 433.4722059174.

The spelling of 81448627 in words is "eighty-one million, four hundred forty-eight thousand, six hundred twenty-seven".