674489666 has 4 divisors (see below), whose sum is σ = 1011734502. Its totient is φ = 337244832.

The previous prime is 674489657. The next prime is 674489677. The reversal of 674489666 is 666984476.

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., 533379025 + 141110641 = 23095^2 + 11879^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 168622415 + ... + 168622418.

Almost surely, 2^674489666 is an apocalyptic number.

674489666 is a deficient number, since it is larger than the sum of its proper divisors (337244836).

674489666 is a wasteful number, since it uses less digits than its factorization.

674489666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337244835.

The product of its digits is 10450944, while the sum is 56.

The square root of 674489666 is about 25970.9388740569. The cubic root of 674489666 is about 876.9841952576.

The spelling of 674489666 in words is "six hundred seventy-four million, four hundred eighty-nine thousand, six hundred sixty-six".