85641974 has 8 divisors (see below), whose sum is σ = 140141448. Its totient is φ = 38928160.

The previous prime is 85641967. The next prime is 85641991. The reversal of 85641974 is 47914658.

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

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 3 ways as a sum of consecutive naturals, for example, 1946387 + ... + 1946430.

It is an arithmetic number, because the mean of its divisors is an integer number (17517681).

Almost surely, 2^85641974 is an apocalyptic number.

85641974 is a deficient number, since it is larger than the sum of its proper divisors (54499474).

85641974 is a wasteful number, since it uses less digits than its factorization.

85641974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3892830.

The product of its digits is 241920, while the sum is 44.

The square root of 85641974 is about 9254.2948948042. The cubic root of 85641974 is about 440.7871138236.

The spelling of 85641974 in words is "eighty-five million, six hundred forty-one thousand, nine hundred seventy-four".