66352585 has 16 divisors (see below), whose sum is σ = 89478144. Its totient is φ = 46867392.

The previous prime is 66352577. The next prime is 66352619. The reversal of 66352585 is 58525366.

It is not a de Polignac number, because 66352585 - 2³ = 66352577 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20697 + ... + 23686.

It is an arithmetic number, because the mean of its divisors is an integer number (5592384).

Almost surely, 2^66352585 is an apocalyptic number.

66352585 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

66352585 is a deficient number, since it is larger than the sum of its proper divisors (23125559).

66352585 is a wasteful number, since it uses less digits than its factorization.

66352585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44424.

The product of its digits is 216000, while the sum is 40.

The square root of 66352585 is about 8145.7096069035. The cubic root of 66352585 is about 404.8423610448.

The spelling of 66352585 in words is "sixty-six million, three hundred fifty-two thousand, five hundred eighty-five".