85136744 has 32 divisors (see below), whose sum is σ = 199022400. Its totient is φ = 33169920.

The previous prime is 85136743. The next prime is 85136747. The reversal of 85136744 is 44763158.

85136744 = T₂₂₅₅ + T₂₂₅₆ + ... + T₂₂₈₇.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 85136698 and 85136707.

It is not an unprimeable number, because it can be changed into a prime (85136743) 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 in 7 ways as a sum of consecutive naturals, for example, 68489 + ... + 69720.

It is an arithmetic number, because the mean of its divisors is an integer number (6219450).

Almost surely, 2^85136744 is an apocalyptic number.

It is an amenable number.

85136744 is an abundant number, since it is smaller than the sum of its proper divisors (113885656).

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

85136744 is a wasteful number, since it uses less digits than its factorization.

85136744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138233 (or 138229 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 85136744 is about 9226.9574616988. The cubic root of 85136744 is about 439.9186213134.

The spelling of 85136744 in words is "eighty-five million, one hundred thirty-six thousand, seven hundred forty-four".