81876695 has 8 divisors (see below), whose sum is σ = 98308080. Its totient is φ = 65464000.

The previous prime is 81876689. The next prime is 81876733. The reversal of 81876695 is 59667818.

It is a happy number.

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

It is not a de Polignac number, because 81876695 - 2¹² = 81872599 is a prime.

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, 8195 + ... + 15195.

It is an arithmetic number, because the mean of its divisors is an integer number (12288510).

Almost surely, 2^81876695 is an apocalyptic number.

81876695 is a deficient number, since it is larger than the sum of its proper divisors (16431385).

81876695 is a wasteful number, since it uses less digits than its factorization.

81876695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9345.

The product of its digits is 725760, while the sum is 50.

The square root of 81876695 is about 9048.5741970766. The cubic root of 81876695 is about 434.2302766149.

The spelling of 81876695 in words is "eighty-one million, eight hundred seventy-six thousand, six hundred ninety-five".