669000698 has 4 divisors (see below), whose sum is σ = 1003501050. Its totient is φ = 334500348.

The previous prime is 669000653. The next prime is 669000719. The reversal of 669000698 is 896000966.

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., 431933089 + 237067609 = 20783^2 + 15397^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167250173 + ... + 167250176.

Almost surely, 2^669000698 is an apocalyptic number.

669000698 is a deficient number, since it is larger than the sum of its proper divisors (334500352).

669000698 is a wasteful number, since it uses less digits than its factorization.

669000698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334500351.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 669000698 is about 25865.0478058712. The cubic root of 669000698 is about 874.5987593819.

The spelling of 669000698 in words is "six hundred sixty-nine million, six hundred ninety-eight", and thus it is an aban number.