669363405 has 8 divisors (see below), whose sum is σ = 1070981472. Its totient is φ = 356993808.

The previous prime is 669363403. The next prime is 669363419. The reversal of 669363405 is 504363966.

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

It is not a de Polignac number, because 669363405 - 2¹ = 669363403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669363403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22312099 + ... + 22312128.

It is an arithmetic number, because the mean of its divisors is an integer number (133872684).

Almost surely, 2^669363405 is an apocalyptic number.

It is an amenable number.

669363405 is a deficient number, since it is larger than the sum of its proper divisors (401618067).

669363405 is a wasteful number, since it uses less digits than its factorization.

669363405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44624235.

The product of its (nonzero) digits is 349920, while the sum is 42.

The square root of 669363405 is about 25872.0583835148. The cubic root of 669363405 is about 874.7567890031.

The spelling of 669363405 in words is "six hundred sixty-nine million, three hundred sixty-three thousand, four hundred five".