669169354 has 16 divisors (see below), whose sum is σ = 1173826368. Its totient is φ = 280117152.

The previous prime is 669169349. The next prime is 669169357. The reversal of 669169354 is 453961966.

It is a junction number, because it is equal to n+sod(n) for n = 669169298 and 669169307.

It is not an unprimeable number, because it can be changed into a prime (669169357) by changing a digit.

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, 555187 + ... + 556390.

It is an arithmetic number, because the mean of its divisors is an integer number (73364148).

Almost surely, 2^669169354 is an apocalyptic number.

669169354 is a deficient number, since it is larger than the sum of its proper divisors (504657014).

669169354 is a wasteful number, since it uses less digits than its factorization.

669169354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111629.

The product of its digits is 1049760, while the sum is 49.

The square root of 669169354 is about 25868.3079075536. The cubic root of 669169354 is about 874.6722490584.

The spelling of 669169354 in words is "six hundred sixty-nine million, one hundred sixty-nine thousand, three hundred fifty-four".