85209700 has 36 divisors (see below), whose sum is σ = 190876672. Its totient is φ = 32983200.

The previous prime is 85209697. The next prime is 85209701. The reversal of 85209700 is 790258.

85209700 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (31).

85209700 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (85209701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10644 + ... + 16843.

Almost surely, 2^85209700 is an apocalyptic number.

It is an amenable number.

85209700 is an abundant number, since it is smaller than the sum of its proper divisors (105666972).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85209700 is a wasteful number, since it uses less digits than its factorization.

85209700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27532 (or 27525 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 85209700 is about 9230.9100309774. The cubic root of 85209700 is about 440.0442448620.

Adding to 85209700 its reverse (790258), we get a palindrome (85999958).

The spelling of 85209700 in words is "eighty-five million, two hundred nine thousand, seven hundred".