684076361 has 8 divisors (see below), whose sum is σ = 723313920. Its totient is φ = 645162192.

The previous prime is 684076343. The next prime is 684076369. The reversal of 684076361 is 163670486.

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

It is not a de Polignac number, because 684076361 - 2¹⁸ = 683814217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (684076369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76490 + ... + 84963.

It is an arithmetic number, because the mean of its divisors is an integer number (90414240).

Almost surely, 2^684076361 is an apocalyptic number.

It is an amenable number.

684076361 is a deficient number, since it is larger than the sum of its proper divisors (39237559).

684076361 is a wasteful number, since it uses less digits than its factorization.

684076361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161695.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 684076361 is about 26154.8534884063. The cubic root of 684076361 is about 881.1195981219.

The spelling of 684076361 in words is "six hundred eighty-four million, seventy-six thousand, three hundred sixty-one".