85309205 has 16 divisors (see below), whose sum is σ = 105494400. Its totient is φ = 66187968.

The previous prime is 85309201. The next prime is 85309207. The reversal of 85309205 is 50290358.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 85309205 - 2² = 85309201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85309201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30704 + ... + 33366.

It is an arithmetic number, because the mean of its divisors is an integer number (6593400).

Almost surely, 2^85309205 is an apocalyptic number.

It is an amenable number.

85309205 is a deficient number, since it is larger than the sum of its proper divisors (20185195).

85309205 is a wasteful number, since it uses less digits than its factorization.

85309205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 85309205 is about 9236.2982303518. The cubic root of 85309205 is about 440.2154678154.

The spelling of 85309205 in words is "eighty-five million, three hundred nine thousand, two hundred five".