669554350 has 24 divisors (see below), whose sum is σ = 1318629888. Its totient is φ = 252067200.

The previous prime is 669554279. The next prime is 669554359. The reversal of 669554350 is 53455966.

It is a junction number, because it is equal to n+sod(n) for n = 669554297 and 669554306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669554359) 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 11 ways as a sum of consecutive naturals, for example, 393006 + ... + 394705.

It is an arithmetic number, because the mean of its divisors is an integer number (54942912).

Almost surely, 2^669554350 is an apocalyptic number.

669554350 is a deficient number, since it is larger than the sum of its proper divisors (649075538).

669554350 is a wasteful number, since it uses less digits than its factorization.

669554350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787740 (or 787735 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 43.

The square root of 669554350 is about 25875.7482983584. The cubic root of 669554350 is about 874.8399598456.

The spelling of 669554350 in words is "six hundred sixty-nine million, five hundred fifty-four thousand, three hundred fifty".