669149146 has 8 divisors (see below), whose sum is σ = 1005508224. Its totient is φ = 333979740.

The previous prime is 669149141. The next prime is 669149191. The reversal of 669149146 is 641941966.

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 = 669149096 and 669149105.

It is not an unprimeable number, because it can be changed into a prime (669149141) 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, 296010 + ... + 298261.

It is an arithmetic number, because the mean of its divisors is an integer number (125688528).

Almost surely, 2^669149146 is an apocalyptic number.

669149146 is a deficient number, since it is larger than the sum of its proper divisors (336359078).

669149146 is a wasteful number, since it uses less digits than its factorization.

669149146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 594836.

The product of its digits is 279936, while the sum is 46.

The square root of 669149146 is about 25867.9173108312. The cubic root of 669149146 is about 874.6634443342.

The spelling of 669149146 in words is "six hundred sixty-nine million, one hundred forty-nine thousand, one hundred forty-six".