671621374 has 8 divisors (see below), whose sum is σ = 1014193800. Its totient is φ = 333556776.

The previous prime is 671621359. The next prime is 671621387. The reversal of 671621374 is 473126176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1126584 + ... + 1127179.

It is an arithmetic number, because the mean of its divisors is an integer number (126774225).

Almost surely, 2^671621374 is an apocalyptic number.

671621374 is a deficient number, since it is larger than the sum of its proper divisors (342572426).

671621374 is a wasteful number, since it uses less digits than its factorization.

671621374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2253914.

The product of its digits is 42336, while the sum is 37.

The square root of 671621374 is about 25915.6588571466. The cubic root of 671621374 is about 875.7392931225.

The spelling of 671621374 in words is "six hundred seventy-one million, six hundred twenty-one thousand, three hundred seventy-four".