85640952 has 32 divisors (see below), whose sum is σ = 214502400. Its totient is φ = 28493664.

The previous prime is 85640911. The next prime is 85640959. The reversal of 85640952 is 25904658.

It is a self number, because there is not a number n which added to its sum of digits gives 85640952.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85640959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11049 + ... + 17127.

It is an arithmetic number, because the mean of its divisors is an integer number (6703200).

Almost surely, 2^85640952 is an apocalyptic number.

It is an amenable number.

85640952 is an abundant number, since it is smaller than the sum of its proper divisors (128861448).

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

85640952 is a wasteful number, since it uses less digits than its factorization.

85640952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6675 (or 6671 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 85640952 is about 9254.2396770345. The cubic root of 85640952 is about 440.7853604535.

The spelling of 85640952 in words is "eighty-five million, six hundred forty thousand, nine hundred fifty-two".