670432066 has 4 divisors (see below), whose sum is σ = 1005648102. Its totient is φ = 335216032.

The previous prime is 670432057. The next prime is 670432067. The reversal of 670432066 is 660234076.

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., 667964025 + 2468041 = 25845^2 + 1571^2 .

It is not an unprimeable number, because it can be changed into a prime (670432067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167608015 + ... + 167608018.

Almost surely, 2^670432066 is an apocalyptic number.

670432066 is a deficient number, since it is larger than the sum of its proper divisors (335216036).

670432066 is a wasteful number, since it uses less digits than its factorization.

670432066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335216035.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 670432066 is about 25892.7029489005. The cubic root of 670432066 is about 875.2220676091. Note that the first 3 decimals are identical.

The spelling of 670432066 in words is "six hundred seventy million, four hundred thirty-two thousand, sixty-six".