85750000 has 140 divisors (see below), whose sum is σ = 242184400. Its totient is φ = 29400000.

The previous prime is 85749959. The next prime is 85750009. The reversal of 85750000 is 5758.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a tau number, because it is divible by the number of its divisors (140).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85750009) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 12249997 + ... + 12250003.

Almost surely, 2^85750000 is an apocalyptic number.

85750000 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85750000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121092200).

85750000 is an abundant number, since it is smaller than the sum of its proper divisors (156434400).

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

85750000 is an frugal number, since it uses more digits than its factorization.

85750000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59 (or 14 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 85750000 is about 9260.1295887261. The cubic root of 85750000 is about 440.9723674632.

Adding to 85750000 its reverse (5758), we get a palindrome (85755758).

The spelling of 85750000 in words is "eighty-five million, seven hundred fifty thousand".