684488104 has 16 divisors (see below), whose sum is σ = 1313262720. Its totient is φ = 334284720.

The previous prime is 684488093. The next prime is 684488107. The reversal of 684488104 is 401884486.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is not an unprimeable number, because it can be changed into a prime (684488107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 994552 + ... + 995239.

It is an arithmetic number, because the mean of its divisors is an integer number (82078920).

Almost surely, 2^684488104 is an apocalyptic number.

It is an amenable number.

684488104 is a deficient number, since it is larger than the sum of its proper divisors (628774616).

684488104 is a wasteful number, since it uses less digits than its factorization.

684488104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1989840 (or 1989836 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 43.

The square root of 684488104 is about 26162.7235585288. The cubic root of 684488104 is about 881.2963435280.

The spelling of 684488104 in words is "six hundred eighty-four million, four hundred eighty-eight thousand, one hundred four".