684348645 has 8 divisors (see below), whose sum is σ = 1094957856. Its totient is φ = 364985936.

The previous prime is 684348557. The next prime is 684348659. The reversal of 684348645 is 546843486.

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 684348645 - 2¹⁰ = 684347621 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 684348594 and 684348603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22811607 + ... + 22811636.

It is an arithmetic number, because the mean of its divisors is an integer number (136869732).

Almost surely, 2^684348645 is an apocalyptic number.

It is an amenable number.

684348645 is a deficient number, since it is larger than the sum of its proper divisors (410609211).

684348645 is a wasteful number, since it uses less digits than its factorization.

684348645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45623251.

The product of its digits is 2211840, while the sum is 48.

The square root of 684348645 is about 26160.0581994765. The cubic root of 684348645 is about 881.2364870922.

The spelling of 684348645 in words is "six hundred eighty-four million, three hundred forty-eight thousand, six hundred forty-five".