671155504 has 20 divisors (see below), whose sum is σ = 1313241840. Its totient is φ = 332254400.

The previous prime is 671155423. The next prime is 671155517. The reversal of 671155504 is 405551176.

It is a self number, because there is not a number n which added to its sum of digits gives 671155504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206044 + ... + 209275.

It is an arithmetic number, because the mean of its divisors is an integer number (65662092).

Almost surely, 2^671155504 is an apocalyptic number.

It is an amenable number.

671155504 is a deficient number, since it is larger than the sum of its proper divisors (642086336).

671155504 is a wasteful number, since it uses less digits than its factorization.

671155504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415428 (or 415422 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 34.

The square root of 671155504 is about 25906.6691027619. The cubic root of 671155504 is about 875.5367608385.

The spelling of 671155504 in words is "six hundred seventy-one million, one hundred fifty-five thousand, five hundred four".