684748260 has 144 divisors (see below), whose sum is σ = 2385417216. Its totient is φ = 155748096.

The previous prime is 684748231. The next prime is 684748271. The reversal of 684748260 is 62847486.

It is a super-3 number, since 3×684748260³ (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 279762 + ... + 282198.

Almost surely, 2^684748260 is an apocalyptic number.

684748260 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 684748260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1192708608).

684748260 is an abundant number, since it is smaller than the sum of its proper divisors (1700668956).

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

684748260 is a wasteful number, since it uses less digits than its factorization.

684748260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2682 (or 2677 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The square root of 684748260 is about 26167.6949691791. The cubic root of 684748260 is about 881.4079819379.

The spelling of 684748260 in words is "six hundred eighty-four million, seven hundred forty-eight thousand, two hundred sixty".