671377306 has 4 divisors (see below), whose sum is σ = 1007065962. Its totient is φ = 335688652.

The previous prime is 671377279. The next prime is 671377307. The reversal of 671377306 is 603773176.

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., 670551025 + 826281 = 25895^2 + 909^2 .

It is not an unprimeable number, because it can be changed into a prime (671377307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167844325 + ... + 167844328.

Almost surely, 2^671377306 is an apocalyptic number.

671377306 is a deficient number, since it is larger than the sum of its proper divisors (335688656).

671377306 is a wasteful number, since it uses less digits than its factorization.

671377306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335688655.

The product of its (nonzero) digits is 111132, while the sum is 40.

The square root of 671377306 is about 25910.9495387568. The cubic root of 671377306 is about 875.6331987057.

The spelling of 671377306 in words is "six hundred seventy-one million, three hundred seventy-seven thousand, three hundred six".