669746914 has 4 divisors (see below), whose sum is σ = 1004620374. Its totient is φ = 334873456.

The previous prime is 669746893. The next prime is 669746923. The reversal of 669746914 is 419647966.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 625750225 + 43996689 = 25015^2 + 6633^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 167436727 + ... + 167436730.

Almost surely, 2^669746914 is an apocalyptic number.

669746914 is a deficient number, since it is larger than the sum of its proper divisors (334873460).

669746914 is a wasteful number, since it uses less digits than its factorization.

669746914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334873459.

The product of its digits is 1959552, while the sum is 52.

The square root of 669746914 is about 25879.4689667311. The cubic root of 669746914 is about 874.9238198711.

The spelling of 669746914 in words is "six hundred sixty-nine million, seven hundred forty-six thousand, nine hundred fourteen".