85297774 has 8 divisors (see below), whose sum is σ = 128101680. Its totient is φ = 42597216.

The previous prime is 85297763. The next prime is 85297781. The reversal of 85297774 is 47779258.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 23739 + ... + 27094.

It is an arithmetic number, because the mean of its divisors is an integer number (16012710).

Almost surely, 2^85297774 is an apocalyptic number.

85297774 is a deficient number, since it is larger than the sum of its proper divisors (42803906).

85297774 is a wasteful number, since it uses less digits than its factorization.

85297774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51674.

The product of its digits is 987840, while the sum is 49.

The square root of 85297774 is about 9235.6794011053. The cubic root of 85297774 is about 440.1958047251.

The spelling of 85297774 in words is "eighty-five million, two hundred ninety-seven thousand, seven hundred seventy-four".