85585585 has 4 divisors (see below), whose sum is σ = 102702708. Its totient is φ = 68468464.

The previous prime is 85585579. The next prime is 85585603. The reversal of 85585585 is 58558558.

85585585 = 2921² + 2922² + ... + 2930².

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 49956624 + 35628961 = 7068^2 + 5969^2 .

It is a cyclic number.

It is not a de Polignac number, because 85585585 - 2⁷ = 85585457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8558554 + ... + 8558563.

It is an arithmetic number, because the mean of its divisors is an integer number (25675677).

Almost surely, 2^85585585 is an apocalyptic number.

It is an amenable number.

85585585 is a deficient number, since it is larger than the sum of its proper divisors (17117123).

85585585 is a wasteful number, since it uses less digits than its factorization.

85585585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17117122.

The product of its digits is 1600000, while the sum is 49.

The square root of 85585585 is about 9251.2477536817. The cubic root of 85585585 is about 440.6903505171.

The spelling of 85585585 in words is "eighty-five million, five hundred eighty-five thousand, five hundred eighty-five".