85297760 has 24 divisors (see below), whose sum is σ = 201516336. Its totient is φ = 34119040.

The previous prime is 85297759. The next prime is 85297763. The reversal of 85297760 is 6779258.

It is a super-2 number, since 2×85297760² = 14551415722035200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85297763) 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, 266396 + ... + 266715.

It is an arithmetic number, because the mean of its divisors is an integer number (8396514).

Almost surely, 2^85297760 is an apocalyptic number.

85297760 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85297760 is an abundant number, since it is smaller than the sum of its proper divisors (116218576).

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

85297760 is a wasteful number, since it uses less digits than its factorization.

85297760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533126 (or 533118 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 85297760 is about 9235.6786431751. The cubic root of 85297760 is about 440.1957806419.

The spelling of 85297760 in words is "eighty-five million, two hundred ninety-seven thousand, seven hundred sixty".