669506829 has 8 divisors (see below), whose sum is σ = 893364000. Its totient is φ = 445993776.

The previous prime is 669506821. The next prime is 669506843. The reversal of 669506829 is 928605966.

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

It is not a de Polignac number, because 669506829 - 2³ = 669506821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669506821) by changing a digit.

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, 81454 + ... + 89295.

It is an arithmetic number, because the mean of its divisors is an integer number (111670500).

Almost surely, 2^669506829 is an apocalyptic number.

It is an amenable number.

669506829 is a deficient number, since it is larger than the sum of its proper divisors (223857171).

669506829 is a wasteful number, since it uses less digits than its factorization.

669506829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172059.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The square root of 669506829 is about 25874.8300284272. The cubic root of 669506829 is about 874.8192623706.

The spelling of 669506829 in words is "six hundred sixty-nine million, five hundred six thousand, eight hundred twenty-nine".