85102709 has 4 divisors (see below), whose sum is σ = 85752480. Its totient is φ = 84452940.

The previous prime is 85102687. The next prime is 85102711. The reversal of 85102709 is 90720158.

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 85102709 - 2⁸ = 85102453 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 (85102009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324689 + ... + 324950.

It is an arithmetic number, because the mean of its divisors is an integer number (21438120).

Almost surely, 2^85102709 is an apocalyptic number.

It is an amenable number.

85102709 is a deficient number, since it is larger than the sum of its proper divisors (649771).

85102709 is a wasteful number, since it uses less digits than its factorization.

85102709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649770.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 85102709 is about 9225.1129532380. The cubic root of 85102709 is about 439.8599916110.

The spelling of 85102709 in words is "eighty-five million, one hundred two thousand, seven hundred nine".