82127691 has 12 divisors (see below), whose sum is σ = 119093832. Its totient is φ = 54537216.

The previous prime is 82127677. The next prime is 82127723. The reversal of 82127691 is 19672128.

It is not a de Polignac number, because 82127691 - 2⁹ = 82127179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82127621) 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, 15441 + ... + 20066.

It is an arithmetic number, because the mean of its divisors is an integer number (9924486).

Almost surely, 2^82127691 is an apocalyptic number.

82127691 is a deficient number, since it is larger than the sum of its proper divisors (36966141).

82127691 is a wasteful number, since it uses less digits than its factorization.

82127691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35770 (or 35767 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 82127691 is about 9062.4329514761. The cubic root of 82127691 is about 434.6735402354.

The spelling of 82127691 in words is "eighty-two million, one hundred twenty-seven thousand, six hundred ninety-one".