684547331 has 8 divisors (see below), whose sum is σ = 737603664. Its totient is φ = 631548000.

The previous prime is 684547289. The next prime is 684547361. The reversal of 684547331 is 133745486.

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 684547331 - 2¹⁴ = 684530947 is a prime.

It is a super-2 number, since 2×684547331² = 937210096758447122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (684547361) 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, 12581 + ... + 39081.

It is an arithmetic number, because the mean of its divisors is an integer number (92200458).

Almost surely, 2^684547331 is an apocalyptic number.

684547331 is a deficient number, since it is larger than the sum of its proper divisors (53056333).

684547331 is a wasteful number, since it uses less digits than its factorization.

684547331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28501.

The product of its digits is 241920, while the sum is 41.

The square root of 684547331 is about 26163.8554307273. The cubic root of 684547331 is about 881.3217615656.

The spelling of 684547331 in words is "six hundred eighty-four million, five hundred forty-seven thousand, three hundred thirty-one".