81275695 has 8 divisors (see below), whose sum is σ = 97969536. Its totient is φ = 64728096.

The previous prime is 81275687. The next prime is 81275713. The reversal of 81275695 is 59657218.

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 81275695 - 2³ = 81275687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35332 + ... + 37561.

It is an arithmetic number, because the mean of its divisors is an integer number (12246192).

Almost surely, 2^81275695 is an apocalyptic number.

81275695 is a deficient number, since it is larger than the sum of its proper divisors (16693841).

81275695 is a wasteful number, since it uses less digits than its factorization.

81275695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73121.

The product of its digits is 151200, while the sum is 43.

The square root of 81275695 is about 9015.3033781454. The cubic root of 81275695 is about 433.1652053225.

The spelling of 81275695 in words is "eighty-one million, two hundred seventy-five thousand, six hundred ninety-five".