684450244 has 27 divisors (see below), whose sum is σ = 1219128687. Its totient is φ = 336234024.

The previous prime is 684450227. The next prime is 684450251. The reversal of 684450244 is 442054486.

It is a happy number.

The square root of 684450244 is 26162.

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

It is a Duffinian 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, 5389309 + ... + 5389435.

Almost surely, 2^684450244 is an apocalyptic number.

684450244 is the 26162-nd square number.

It is an amenable number.

684450244 is a deficient number, since it is larger than the sum of its proper divisors (534678443).

684450244 is a wasteful number, since it uses less digits than its factorization.

684450244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 37.

The cubic root of 684450244 is about 881.2800946482.

The spelling of 684450244 in words is "six hundred eighty-four million, four hundred fifty thousand, two hundred forty-four".