669701585 has 32 divisors (see below), whose sum is σ = 943633152. Its totient is φ = 446699520.

The previous prime is 669701579. The next prime is 669701597. The reversal of 669701585 is 585107966.

It is not a de Polignac number, because 669701585 - 2²⁴ = 652924369 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 850562 + ... + 851348.

It is an arithmetic number, because the mean of its divisors is an integer number (29488536).

Almost surely, 2^669701585 is an apocalyptic number.

It is an amenable number.

669701585 is a deficient number, since it is larger than the sum of its proper divisors (273931567).

669701585 is a wasteful number, since it uses less digits than its factorization.

669701585 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 669701585 is about 25878.5931804648. The cubic root of 669701585 is about 874.9040809141.

The spelling of 669701585 in words is "six hundred sixty-nine million, seven hundred one thousand, five hundred eighty-five".