671601744 has 60 divisors (see below), whose sum is σ = 2050425312. Its totient is φ = 203515200.

The previous prime is 671601731. The next prime is 671601803. The reversal of 671601744 is 447106176.

671601744 is a `hidden beast` number, since 6 + 7 + 1 + 601 + 7 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 671601699 and 671601708.

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 11 ways as a sum of consecutive naturals, for example, 210412 + ... + 213579.

Almost surely, 2^671601744 is an apocalyptic number.

It is an amenable number.

671601744 is an abundant number, since it is smaller than the sum of its proper divisors (1378823568).

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

671601744 is a wasteful number, since it uses less digits than its factorization.

671601744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424016 (or 424007 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 671601744 is about 25915.2801258254. The cubic root of 671601744 is about 875.7307610684.

The spelling of 671601744 in words is "six hundred seventy-one million, six hundred one thousand, seven hundred forty-four".