85649420 has 12 divisors (see below), whose sum is σ = 179863824. Its totient is φ = 34259760.

The previous prime is 85649419. The next prime is 85649423. The reversal of 85649420 is 2494658.

It is not an unprimeable number, because it can be changed into a prime (85649423) 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 3 ways as a sum of consecutive naturals, for example, 2141216 + ... + 2141255.

It is an arithmetic number, because the mean of its divisors is an integer number (14988652).

Almost surely, 2^85649420 is an apocalyptic number.

It is an amenable number.

85649420 is an abundant number, since it is smaller than the sum of its proper divisors (94214404).

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

85649420 is a wasteful number, since it uses less digits than its factorization.

85649420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4282480 (or 4282478 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 85649420 is about 9254.6971857538. The cubic root of 85649420 is about 440.7998879560.

The spelling of 85649420 in words is "eighty-five million, six hundred forty-nine thousand, four hundred twenty".