85765650 has 48 divisors (see below), whose sum is σ = 217661664. Its totient is φ = 22337280.

The previous prime is 85765649. The next prime is 85765661. The reversal of 85765650 is 5656758.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199 + ... + 13098.

It is an arithmetic number, because the mean of its divisors is an integer number (4534618).

Almost surely, 2^85765650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85765650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108830832).

85765650 is an abundant number, since it is smaller than the sum of its proper divisors (131896014).

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

85765650 is a wasteful number, since it uses less digits than its factorization.

85765650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13355 (or 13350 counting only the distinct ones).

The product of its (nonzero) digits is 252000, while the sum is 42.

The square root of 85765650 is about 9260.9745707458. The cubic root of 85765650 is about 440.9991927217. Note that the first 3 decimals are identical.

The spelling of 85765650 in words is "eighty-five million, seven hundred sixty-five thousand, six hundred fifty".