85489720 has 16 divisors (see below), whose sum is σ = 192351960. Its totient is φ = 34195872.

The previous prime is 85489711. The next prime is 85489727. The reversal of 85489720 is 2798458.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85489727) 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, 1068582 + ... + 1068661.

Almost surely, 2^85489720 is an apocalyptic number.

It is an amenable number.

85489720 is an abundant number, since it is smaller than the sum of its proper divisors (106862240).

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

85489720 is a wasteful number, since it uses less digits than its factorization.

85489720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137254 (or 2137250 counting only the distinct ones).

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

The square root of 85489720 is about 9246.0651090072. The cubic root of 85489720 is about 440.5257489513.

The spelling of 85489720 in words is "eighty-five million, four hundred eighty-nine thousand, seven hundred twenty".