85549660 has 24 divisors (see below), whose sum is σ = 205319520. Its totient is φ = 29331264.

The previous prime is 85549643. The next prime is 85549663. The reversal of 85549660 is 6694558.

It is a super-2 number, since 2×85549660² = 14637488652231200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85549663) 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, 305395 + ... + 305674.

It is an arithmetic number, because the mean of its divisors is an integer number (8554980).

Almost surely, 2^85549660 is an apocalyptic number.

It is an amenable number.

85549660 is an abundant number, since it is smaller than the sum of its proper divisors (119769860).

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

85549660 is a wasteful number, since it uses less digits than its factorization.

85549660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611085 (or 611083 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 43.

The square root of 85549660 is about 9249.3059199056. The cubic root of 85549660 is about 440.6286811892.

The spelling of 85549660 in words is "eighty-five million, five hundred forty-nine thousand, six hundred sixty".