671388274 has 4 divisors (see below), whose sum is σ = 1007082414. Its totient is φ = 335694136.

The previous prime is 671388253. The next prime is 671388281. The reversal of 671388274 is 472883176.

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., 365383225 + 306005049 = 19115^2 + 17493^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 167847067 + ... + 167847070.

Almost surely, 2^671388274 is an apocalyptic number.

671388274 is a deficient number, since it is larger than the sum of its proper divisors (335694140).

671388274 is a wasteful number, since it uses less digits than its factorization.

671388274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335694139.

The product of its digits is 451584, while the sum is 46.

The square root of 671388274 is about 25911.1611858674. The cubic root of 671388274 is about 875.6379669597.

The spelling of 671388274 in words is "six hundred seventy-one million, three hundred eighty-eight thousand, two hundred seventy-four".