82899691 has 4 divisors (see below), whose sum is σ = 94742512. Its totient is φ = 71056872.

The previous prime is 82899683. The next prime is 82899709. The reversal of 82899691 is 19699828.

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

It is a cyclic number.

It is not a de Polignac number, because 82899691 - 2³ = 82899683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82899391) 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, 5921400 + ... + 5921413.

It is an arithmetic number, because the mean of its divisors is an integer number (23685628).

Almost surely, 2^82899691 is an apocalyptic number.

82899691 is a deficient number, since it is larger than the sum of its proper divisors (11842821).

82899691 is a wasteful number, since it uses less digits than its factorization.

82899691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11842820.

The product of its digits is 559872, while the sum is 52.

The square root of 82899691 is about 9104.9267432528. The cubic root of 82899691 is about 436.0312714293.

The spelling of 82899691 in words is "eighty-two million, eight hundred ninety-nine thousand, six hundred ninety-one".