85605081 has 8 divisors (see below), whose sum is σ = 120854304. Its totient is φ = 53712960.

The previous prime is 85605073. The next prime is 85605097. The reversal of 85605081 is 18050658.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85605081 - 2³ = 85605073 is a prime.

It is a super-2 number, since 2×85605081² = 14656459786033122, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (85605031) 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, 839215 + ... + 839316.

It is an arithmetic number, because the mean of its divisors is an integer number (15106788).

Almost surely, 2^85605081 is an apocalyptic number.

It is an amenable number.

85605081 is a deficient number, since it is larger than the sum of its proper divisors (35249223).

85605081 is a wasteful number, since it uses less digits than its factorization.

85605081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1678551.

The product of its (nonzero) digits is 9600, while the sum is 33.

The square root of 85605081 is about 9252.3013893842. The cubic root of 85605081 is about 440.7238103837.

The spelling of 85605081 in words is "eighty-five million, six hundred five thousand, eighty-one".