684554896 has 45 divisors (see below), whose sum is σ = 1377015939. Its totient is φ = 329666400.

The previous prime is 684554869. The next prime is 684554903. The reversal of 684554896 is 698455486.

The square root of 684554896 is 26164.

It is a perfect power (a square), and thus also a powerful number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3244231 + ... + 3244441.

Almost surely, 2^684554896 is an apocalyptic number.

684554896 is the 26164-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 684554896

684554896 is an abundant number, since it is smaller than the sum of its proper divisors (692461043).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

684554896 is an equidigital number, since it uses as much as digits as its factorization.

684554896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 244 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 55.

The cubic root of 684554896 is about 881.3250080782.

The spelling of 684554896 in words is "six hundred eighty-four million, five hundred fifty-four thousand, eight hundred ninety-six".