671753628 has 96 divisors (see below), whose sum is σ = 2143518720. Its totient is φ = 177163200.

The previous prime is 671753603. The next prime is 671753639. The reversal of 671753628 is 826357176.

671753628 is a `hidden beast` number, since 6 + 7 + 17 + 5 + 3 + 628 = 666.

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 31 ways as a sum of consecutive naturals, for example, 24348 + ... + 44003.

It is an arithmetic number, because the mean of its divisors is an integer number (22328320).

Almost surely, 2^671753628 is an apocalyptic number.

It is an amenable number.

671753628 is an abundant number, since it is smaller than the sum of its proper divisors (1471765092).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671753628 is a wasteful number, since it uses less digits than its factorization.

671753628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68384 (or 68376 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 671753628 is about 25918.2103548837. The cubic root of 671753628 is about 875.7967721464.

The spelling of 671753628 in words is "six hundred seventy-one million, seven hundred fifty-three thousand, six hundred twenty-eight".