670666448 has 10 divisors (see below), whose sum is σ = 1299416274. Its totient is φ = 335333216.

The previous prime is 670666411. The next prime is 670666519. The reversal of 670666448 is 844666076.

It can be written as a sum of positive squares in only one way, i.e., 606538384 + 64128064 = 24628^2 + 8008^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 20958311 + ... + 20958342.

Almost surely, 2^670666448 is an apocalyptic number.

It is an amenable number.

670666448 is a deficient number, since it is larger than the sum of its proper divisors (628749826).

670666448 is a wasteful number, since it uses less digits than its factorization.

670666448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41916661 (or 41916655 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 47.

The square root of 670666448 is about 25897.2285775911. The cubic root of 670666448 is about 875.3240478139.

The spelling of 670666448 in words is "six hundred seventy million, six hundred sixty-six thousand, four hundred forty-eight".