669192946 has 8 divisors (see below), whose sum is σ = 1022729004. Its totient is φ = 328283280.

The previous prime is 669192941. The next prime is 669192949. The reversal of 669192946 is 649291966.

It can be written as a sum of positive squares in 2 ways, for example, as 645718921 + 23474025 = 25411^2 + 4845^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 669192893 and 669192902.

It is not an unprimeable number, because it can be changed into a prime (669192941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3156465 + ... + 3156676.

Almost surely, 2^669192946 is an apocalyptic number.

669192946 is a deficient number, since it is larger than the sum of its proper divisors (353536058).

669192946 is a wasteful number, since it uses less digits than its factorization.

669192946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6313196.

The product of its digits is 1259712, while the sum is 52.

The square root of 669192946 is about 25868.7639055290. The cubic root of 669192946 is about 874.6825279836.

The spelling of 669192946 in words is "six hundred sixty-nine million, one hundred ninety-two thousand, nine hundred forty-six".