671377634 has 12 divisors (see below), whose sum is σ = 1069791234. Its totient is φ = 315942144.

The previous prime is 671377607. The next prime is 671377649. The reversal of 671377634 is 436773176.

It can be written as a sum of positive squares in 3 ways, for example, as 600397009 + 70980625 = 24503^2 + 8425^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 580199 + ... + 581354.

Almost surely, 2^671377634 is an apocalyptic number.

671377634 is a deficient number, since it is larger than the sum of its proper divisors (398413600).

671377634 is a wasteful number, since it uses less digits than its factorization.

671377634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161589 (or 1161572 counting only the distinct ones).

The product of its digits is 444528, while the sum is 44.

The square root of 671377634 is about 25910.9558681265. The cubic root of 671377634 is about 875.6333413019.

The spelling of 671377634 in words is "six hundred seventy-one million, three hundred seventy-seven thousand, six hundred thirty-four".