85985972 has 6 divisors (see below), whose sum is σ = 150475458. Its totient is φ = 42992984.

The previous prime is 85985953. The next prime is 85985987. The reversal of 85985972 is 27958958.

It can be written as a sum of positive squares in only one way, i.e., 85303696 + 682276 = 9236^2 + 826^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10748243 + ... + 10748250.

It is an arithmetic number, because the mean of its divisors is an integer number (25079243).

Almost surely, 2^85985972 is an apocalyptic number.

It is an amenable number.

85985972 is a deficient number, since it is larger than the sum of its proper divisors (64489486).

85985972 is a wasteful number, since it uses less digits than its factorization.

85985972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21496497 (or 21496495 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 53.

The square root of 85985972 is about 9272.8621255791. The cubic root of 85985972 is about 441.3764950703.

The spelling of 85985972 in words is "eighty-five million, nine hundred eighty-five thousand, nine hundred seventy-two".