669461365 has 8 divisors (see below), whose sum is σ = 804749400. Its totient is φ = 534638592.

The previous prime is 669461347. The next prime is 669461389. The reversal of 669461365 is 563164966.

It can be written as a sum of positive squares in 4 ways, for example, as 320481604 + 348979761 = 17902^2 + 18681^2 .

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 669461365 - 2⁷ = 669461237 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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113140 + ... + 118909.

It is an arithmetic number, because the mean of its divisors is an integer number (100593675).

Almost surely, 2^669461365 is an apocalyptic number.

It is an amenable number.

669461365 is a deficient number, since it is larger than the sum of its proper divisors (135288035).

669461365 is a wasteful number, since it uses less digits than its factorization.

669461365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232631.

The product of its digits is 699840, while the sum is 46.

The square root of 669461365 is about 25873.9514763401. The cubic root of 669461365 is about 874.7994598923.

The spelling of 669461365 in words is "six hundred sixty-nine million, four hundred sixty-one thousand, three hundred sixty-five".