81300627 has 12 divisors (see below), whose sum is σ = 117924664. Its totient is φ = 53974080.

The previous prime is 81300623. The next prime is 81300697. The reversal of 81300627 is 72600318.

81300627 is a `hidden beast` number, since 8 + 1 + 30 + 0 + 627 = 666.

It is not a de Polignac number, because 81300627 - 2² = 81300623 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 81300627.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81300623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16573 + ... + 20910.

Almost surely, 2^81300627 is an apocalyptic number.

81300627 is a deficient number, since it is larger than the sum of its proper divisors (36624037).

81300627 is a wasteful number, since it uses less digits than its factorization.

81300627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37730 (or 37727 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 81300627 is about 9016.6860320186. The cubic root of 81300627 is about 433.2094931456.

The spelling of 81300627 in words is "eighty-one million, three hundred thousand, six hundred twenty-seven".