81073627 has 4 divisors (see below), whose sum is σ = 85340680. Its totient is φ = 76806576.

The previous prime is 81073613. The next prime is 81073661. The reversal of 81073627 is 72637018.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-81073627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 81073592 and 81073601.

It is not an unprimeable number, because it can be changed into a prime (81073607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2133498 + ... + 2133535.

It is an arithmetic number, because the mean of its divisors is an integer number (21335170).

Almost surely, 2^81073627 is an apocalyptic number.

81073627 is a deficient number, since it is larger than the sum of its proper divisors (4267053).

81073627 is a wasteful number, since it uses less digits than its factorization.

81073627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4267052.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 81073627 is about 9004.0894597955. The cubic root of 81073627 is about 432.8059283158.

The spelling of 81073627 in words is "eighty-one million, seventy-three thousand, six hundred twenty-seven".