85136972 has 6 divisors (see below), whose sum is σ = 148989708. Its totient is φ = 42568484.

The previous prime is 85136911. The next prime is 85136977. The reversal of 85136972 is 27963158.

It is not an unprimeable number, because it can be changed into a prime (85136977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10642118 + ... + 10642125.

It is an arithmetic number, because the mean of its divisors is an integer number (24831618).

Almost surely, 2^85136972 is an apocalyptic number.

It is an amenable number.

85136972 is a deficient number, since it is larger than the sum of its proper divisors (63852736).

85136972 is a wasteful number, since it uses less digits than its factorization.

85136972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21284247 (or 21284245 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 85136972 is about 9226.9698167925. The cubic root of 85136972 is about 439.9190140203.

The spelling of 85136972 in words is "eighty-five million, one hundred thirty-six thousand, nine hundred seventy-two".