66350585 has 16 divisors (see below), whose sum is σ = 91466496. Its totient is φ = 45261888.

The previous prime is 66350573. The next prime is 66350597. The reversal of 66350585 is 58505366.

It is an interprime number because it is at equal distance from previous prime (66350573) and next prime (66350597).

It is not a de Polignac number, because 66350585 - 2¹⁰ = 66349561 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, 2084 + ... + 11706.

It is an arithmetic number, because the mean of its divisors is an integer number (5716656).

Almost surely, 2^66350585 is an apocalyptic number.

It is an amenable number.

66350585 is a deficient number, since it is larger than the sum of its proper divisors (25115911).

66350585 is a wasteful number, since it uses less digits than its factorization.

66350585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9832.

The product of its (nonzero) digits is 108000, while the sum is 38.

The square root of 66350585 is about 8145.5868419654. The cubic root of 66350585 is about 404.8382934170.

The spelling of 66350585 in words is "sixty-six million, three hundred fifty thousand, five hundred eighty-five".