670707146 has 4 divisors (see below), whose sum is σ = 1006060722. Its totient is φ = 335353572.

The previous prime is 670707143. The next prime is 670707161. The reversal of 670707146 is 641707076.

It is a happy number.

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., 615784225 + 54922921 = 24815^2 + 7411^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (670707143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167676785 + ... + 167676788.

Almost surely, 2^670707146 is an apocalyptic number.

670707146 is a deficient number, since it is larger than the sum of its proper divisors (335353576).

670707146 is a wasteful number, since it uses less digits than its factorization.

670707146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335353575.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 670707146 is about 25898.0143254266. The cubic root of 670707146 is about 875.3417531962.

The spelling of 670707146 in words is "six hundred seventy million, seven hundred seven thousand, one hundred forty-six".