684241448 has 48 divisors (see below), whose sum is σ = 1436902740. Its totient is φ = 305127680.

The previous prime is 684241447. The next prime is 684241451. The reversal of 684241448 is 844142486.

It can be written as a sum of positive squares in 2 ways, for example, as 684240964 + 484 = 26158^2 + 22^2 .

It is a super-2 number, since 2×684241448² = 936372718322273408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (684241447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44636 + ... + 57972.

Almost surely, 2^684241448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 684241448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (718451370).

684241448 is an abundant number, since it is smaller than the sum of its proper divisors (752661292).

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

684241448 is a wasteful number, since it uses less digits than its factorization.

684241448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13418 (or 13403 counting only the distinct ones).

The product of its digits is 196608, while the sum is 41.

The square root of 684241448 is about 26158.0092514702. The cubic root of 684241448 is about 881.1904721254.

The spelling of 684241448 in words is "six hundred eighty-four million, two hundred forty-one thousand, four hundred forty-eight".