80829689 has 4 divisors (see below), whose sum is σ = 80854656. Its totient is φ = 80804724.

The previous prime is 80829653. The next prime is 80829701. The reversal of 80829689 is 98692808.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80829689 - 2¹² = 80825593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80829289) 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, 6749 + ... + 14394.

It is an arithmetic number, because the mean of its divisors is an integer number (20213664).

Almost surely, 2^80829689 is an apocalyptic number.

It is an amenable number.

80829689 is a deficient number, since it is larger than the sum of its proper divisors (24967).

80829689 is a wasteful number, since it uses less digits than its factorization.

80829689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24966.

The product of its (nonzero) digits is 497664, while the sum is 50.

The square root of 80829689 is about 8990.5332989762. The cubic root of 80829689 is about 432.3714101997.

It can be divided in two parts, 80829 and 689, that added together give a palindrome (81518).

The spelling of 80829689 in words is "eighty million, eight hundred twenty-nine thousand, six hundred eighty-nine".