669848966 has 4 divisors (see below), whose sum is σ = 1004773452. Its totient is φ = 334924482.

The previous prime is 669848953. The next prime is 669849013.

669848966 is nontrivially palindromic in base 10.

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

It is a junction number, because it is equal to n+sod(n) for n = 669848899 and 669848908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167462240 + ... + 167462243.

It is an arithmetic number, because the mean of its divisors is an integer number (251193363).

Almost surely, 2^669848966 is an apocalyptic number.

669848966 is a deficient number, since it is larger than the sum of its proper divisors (334924486).

669848966 is a wasteful number, since it uses less digits than its factorization.

669848966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334924485.

The product of its digits is 26873856, while the sum is 62.

The square root of 669848966 is about 25881.4405704165. The cubic root of 669848966 is about 874.9682561545.

The spelling of 669848966 in words is "six hundred sixty-nine million, eight hundred forty-eight thousand, nine hundred sixty-six".