670304146 has 4 divisors (see below), whose sum is σ = 1005456222. Its totient is φ = 335152072.

The previous prime is 670304143. The next prime is 670304171. The reversal of 670304146 is 641403076.

670304146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 645414025 + 24890121 = 25405^2 + 4989^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (670304143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167576035 + ... + 167576038.

Almost surely, 2^670304146 is an apocalyptic number.

670304146 is a deficient number, since it is larger than the sum of its proper divisors (335152076).

670304146 is a wasteful number, since it uses less digits than its factorization.

670304146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335152075.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 670304146 is about 25890.2326370390. The cubic root of 670304146 is about 875.1663992653.

The spelling of 670304146 in words is "six hundred seventy million, three hundred four thousand, one hundred forty-six".