85646137 has 4 divisors (see below), whose sum is σ = 85664656. Its totient is φ = 85627620.

The previous prime is 85646107. The next prime is 85646147. The reversal of 85646137 is 73164658.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 85646137 - 2¹⁹ = 85121849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85646137.

It is not an unprimeable number, because it can be changed into a prime (85646107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4198 + ... + 13744.

It is an arithmetic number, because the mean of its divisors is an integer number (21416164).

Almost surely, 2^85646137 is an apocalyptic number.

It is an amenable number.

85646137 is a deficient number, since it is larger than the sum of its proper divisors (18519).

85646137 is an equidigital number, since it uses as much as digits as its factorization.

85646137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18518.

The product of its digits is 120960, while the sum is 40.

The square root of 85646137 is about 9254.5198146635. The cubic root of 85646137 is about 440.7942558317.

The spelling of 85646137 in words is "eighty-five million, six hundred forty-six thousand, one hundred thirty-seven".