85780829 has 8 divisors (see below), whose sum is σ = 88044000. Its totient is φ = 83529936.

The previous prime is 85780819. The next prime is 85780831. The reversal of 85780829 is 92808758.

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

It is a cyclic number.

It is not a de Polignac number, because 85780829 - 2¹⁶ = 85715293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85780819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12047 + ... + 17795.

It is an arithmetic number, because the mean of its divisors is an integer number (11005500).

Almost surely, 2^85780829 is an apocalyptic number.

It is an amenable number.

85780829 is a deficient number, since it is larger than the sum of its proper divisors (2263171).

85780829 is a wasteful number, since it uses less digits than its factorization.

85780829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6139.

The product of its (nonzero) digits is 322560, while the sum is 47.

The square root of 85780829 is about 9261.7940486711. The cubic root of 85780829 is about 441.0252075341.

The spelling of 85780829 in words is "eighty-five million, seven hundred eighty thousand, eight hundred twenty-nine".