85708249 has 8 divisors (see below), whose sum is σ = 93588192. Its totient is φ = 77843040.

The previous prime is 85708247. The next prime is 85708277. The reversal of 85708249 is 94280758.

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

It is not a de Polignac number, because 85708249 - 2¹ = 85708247 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85708247) 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, 11077 + ... + 17149.

It is an arithmetic number, because the mean of its divisors is an integer number (11698524).

Almost surely, 2^85708249 is an apocalyptic number.

It is an amenable number.

85708249 is a deficient number, since it is larger than the sum of its proper divisors (7879943).

85708249 is a wasteful number, since it uses less digits than its factorization.

85708249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7367.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 85708249 is about 9257.8749721521. The cubic root of 85708249 is about 440.9007871865.

The spelling of 85708249 in words is "eighty-five million, seven hundred eight thousand, two hundred forty-nine".