669440674 has 16 divisors (see below), whose sum is σ = 1154657088. Its totient is φ = 285142032.

The previous prime is 669440659. The next prime is 669440677. The reversal of 669440674 is 476044966.

It is not an unprimeable number, because it can be changed into a prime (669440677) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 144397 + ... + 148960.

It is an arithmetic number, because the mean of its divisors is an integer number (72166068).

Almost surely, 2^669440674 is an apocalyptic number.

669440674 is a deficient number, since it is larger than the sum of its proper divisors (485216414).

669440674 is a wasteful number, since it uses less digits than its factorization.

669440674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293529.

The product of its (nonzero) digits is 870912, while the sum is 46.

The square root of 669440674 is about 25873.5516309609. The cubic root of 669440674 is about 874.7904473423.

The spelling of 669440674 in words is "six hundred sixty-nine million, four hundred forty thousand, six hundred seventy-four".