85265680 has 20 divisors (see below), whose sum is σ = 198242892. Its totient is φ = 34106240.

The previous prime is 85265657. The next prime is 85265681. The reversal of 85265680 is 8656258.

It can be written as a sum of positive squares in 2 ways, for example, as 15776784 + 69488896 = 3972^2 + 8336^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (85265681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532831 + ... + 532990.

Almost surely, 2^85265680 is an apocalyptic number.

85265680 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85265680 is an abundant number, since it is smaller than the sum of its proper divisors (112977212).

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

85265680 is a wasteful number, since it uses less digits than its factorization.

85265680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065834 (or 1065828 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 85265680 is about 9233.9417368749. The cubic root of 85265680 is about 440.1405886832.

The spelling of 85265680 in words is "eighty-five million, two hundred sixty-five thousand, six hundred eighty".