684337445 has 16 divisors (see below), whose sum is σ = 896633280. Its totient is φ = 497270400.

The previous prime is 684337429. The next prime is 684337453. The reversal of 684337445 is 544733486.

It is not a de Polignac number, because 684337445 - 2⁴ = 684337429 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 684337396 and 684337405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67946 + ... + 77364.

It is an arithmetic number, because the mean of its divisors is an integer number (56039580).

Almost surely, 2^684337445 is an apocalyptic number.

It is an amenable number.

684337445 is a deficient number, since it is larger than the sum of its proper divisors (212295835).

684337445 is a wasteful number, since it uses less digits than its factorization.

684337445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10756.

The product of its digits is 967680, while the sum is 44.

The square root of 684337445 is about 26159.8441317986. The cubic root of 684337445 is about 881.2316796486.

The spelling of 684337445 in words is "six hundred eighty-four million, three hundred thirty-seven thousand, four hundred forty-five".