82045691 has 16 divisors (see below), whose sum is σ = 103133184. Its totient is φ = 63530784.

The previous prime is 82045681. The next prime is 82045703. The reversal of 82045691 is 19654028.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82045691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (82045681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5315 + ... + 13868.

It is an arithmetic number, because the mean of its divisors is an integer number (6445824).

Almost surely, 2^82045691 is an apocalyptic number.

82045691 is a deficient number, since it is larger than the sum of its proper divisors (21087493).

82045691 is a wasteful number, since it uses less digits than its factorization.

82045691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19250.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 82045691 is about 9057.9076502247. The cubic root of 82045691 is about 434.5288261564.

The spelling of 82045691 in words is "eighty-two million, forty-five thousand, six hundred ninety-one".