85780750 has 32 divisors (see below), whose sum is σ = 175185504. Its totient is φ = 31192000.

The previous prime is 85780729. The next prime is 85780771. The reversal of 85780750 is 5708758.

It is an interprime number because it is at equal distance from previous prime (85780729) and next prime (85780771).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12847 + ... + 18346.

It is an arithmetic number, because the mean of its divisors is an integer number (5474547).

Almost surely, 2^85780750 is an apocalyptic number.

85780750 is an abundant number, since it is smaller than the sum of its proper divisors (89404754).

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

85780750 is a wasteful number, since it uses less digits than its factorization.

85780750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31221 (or 31211 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 40.

The square root of 85780750 is about 9261.7897838377. The cubic root of 85780750 is about 441.0250721464.

The spelling of 85780750 in words is "eighty-five million, seven hundred eighty thousand, seven hundred fifty".