684672541 has 24 divisors (see below), whose sum is σ = 824739840. Its totient is φ = 566143200.

The previous prime is 684672503. The next prime is 684672551. The reversal of 684672541 is 145276486.

684672541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 684672541 - 2⁹ = 684672029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684672551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 727131 + ... + 728071.

It is an arithmetic number, because the mean of its divisors is an integer number (34364160).

Almost surely, 2^684672541 is an apocalyptic number.

It is an amenable number.

684672541 is a deficient number, since it is larger than the sum of its proper divisors (140067299).

684672541 is a wasteful number, since it uses less digits than its factorization.

684672541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465 (or 1458 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 684672541 is about 26166.2481261644. The cubic root of 684672541 is about 881.3754922406.

The spelling of 684672541 in words is "six hundred eighty-four million, six hundred seventy-two thousand, five hundred forty-one".