684541741 has 8 divisors (see below), whose sum is σ = 744499224. Its totient is φ = 625627200.

The previous prime is 684541733. The next prime is 684541769. The reversal of 684541741 is 147145486.

684541741 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 166797225 + 517744516 = 12915^2 + 22754^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 684541741 - 2³ = 684541733 is a prime.

It is a super-2 number, since 2×684541741² = 937194790342622162, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 684541694 and 684541703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (684541441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259366 + ... + 261991.

It is an arithmetic number, because the mean of its divisors is an integer number (93062403).

Almost surely, 2^684541741 is an apocalyptic number.

It is an amenable number.

684541741 is a deficient number, since it is larger than the sum of its proper divisors (59957483).

684541741 is a wasteful number, since it uses less digits than its factorization.

684541741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521471.

The product of its digits is 107520, while the sum is 40.

The square root of 684541741 is about 26163.7486037456. The cubic root of 684541741 is about 881.3193626070.

The spelling of 684541741 in words is "six hundred eighty-four million, five hundred forty-one thousand, seven hundred forty-one".