671451628 has 6 divisors (see below), whose sum is σ = 1175040356. Its totient is φ = 335725812.

The previous prime is 671451607. The next prime is 671451631. The reversal of 671451628 is 826154176.

It is a super-3 number, since 3×671451628³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83931450 + ... + 83931457.

Almost surely, 2^671451628 is an apocalyptic number.

It is an amenable number.

671451628 is a deficient number, since it is larger than the sum of its proper divisors (503588728).

671451628 is a wasteful number, since it uses less digits than its factorization.

671451628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167862911 (or 167862909 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 671451628 is about 25912.3836803950. The cubic root of 671451628 is about 875.6655086099.

The spelling of 671451628 in words is "six hundred seventy-one million, four hundred fifty-one thousand, six hundred twenty-eight".