669563085 has 8 divisors (see below), whose sum is σ = 1071300960. Its totient is φ = 357100304.

The previous prime is 669563077. The next prime is 669563099. The reversal of 669563085 is 580365966.

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

It is a cyclic number.

It is not a de Polignac number, because 669563085 - 2³ = 669563077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22318755 + ... + 22318784.

It is an arithmetic number, because the mean of its divisors is an integer number (133912620).

Almost surely, 2^669563085 is an apocalyptic number.

It is an amenable number.

669563085 is a deficient number, since it is larger than the sum of its proper divisors (401737875).

669563085 is a wasteful number, since it uses less digits than its factorization.

669563085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44637547.

The product of its (nonzero) digits is 1166400, while the sum is 48.

The square root of 669563085 is about 25875.9170851972. The cubic root of 669563085 is about 874.8437642138.

The spelling of 669563085 in words is "six hundred sixty-nine million, five hundred sixty-three thousand, eighty-five".