85561908 has 48 divisors (see below), whose sum is σ = 207071424. Its totient is φ = 27475200.

The previous prime is 85561907. The next prime is 85561939. The reversal of 85561908 is 80916558.

It is a self number, because there is not a number n which added to its sum of digits gives 85561908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85561907) 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 15 ways as a sum of consecutive naturals, for example, 46608 + ... + 48408.

It is an arithmetic number, because the mean of its divisors is an integer number (4313988).

Almost surely, 2^85561908 is an apocalyptic number.

It is an amenable number.

85561908 is an abundant number, since it is smaller than the sum of its proper divisors (121509516).

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

85561908 is a wasteful number, since it uses less digits than its factorization.

85561908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1952 (or 1950 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 42.

The square root of 85561908 is about 9249.9679999446. The cubic root of 85561908 is about 440.6497082065.

The spelling of 85561908 in words is "eighty-five million, five hundred sixty-one thousand, nine hundred eight".