85340646 has 24 divisors (see below), whose sum is σ = 195782184. Its totient is φ = 26773440.

The previous prime is 85340641. The next prime is 85340687. The reversal of 85340646 is 64604358.

85340646 is a `hidden beast` number, since 8 + 5 + 3 + 4 + 0 + 646 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 85340646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85340641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139140 + ... + 139751.

It is an arithmetic number, because the mean of its divisors is an integer number (8157591).

Almost surely, 2^85340646 is an apocalyptic number.

85340646 is an abundant number, since it is smaller than the sum of its proper divisors (110441538).

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

85340646 is a wasteful number, since it uses less digits than its factorization.

85340646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278916 (or 278913 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The square root of 85340646 is about 9238.0001082485. Note that the first 3 decimals coincide. The cubic root of 85340646 is about 440.2695421462.

The spelling of 85340646 in words is "eighty-five million, three hundred forty thousand, six hundred forty-six".