671385974 has 16 divisors (see below), whose sum is σ = 1151317248. Its totient is φ = 287644392.

The previous prime is 671385973. The next prime is 671385977. The reversal of 671385974 is 479583176.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671385971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55037 + ... + 66119.

It is an arithmetic number, because the mean of its divisors is an integer number (71957328).

Almost surely, 2^671385974 is an apocalyptic number.

671385974 is a deficient number, since it is larger than the sum of its proper divisors (479931274).

671385974 is a wasteful number, since it uses less digits than its factorization.

671385974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15419.

The product of its digits is 1270080, while the sum is 50.

The square root of 671385974 is about 25911.1168034108. The cubic root of 671385974 is about 875.6369670566.

The spelling of 671385974 in words is "six hundred seventy-one million, three hundred eighty-five thousand, nine hundred seventy-four".