747684 has 96 divisors (see below), whose sum is σ = 2365440. Its totient is φ = 199584.

The previous prime is 747679. The next prime is 747713. The reversal of 747684 is 486747.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17367 + ... + 17409.

It is an arithmetic number, because the mean of its divisors is an integer number (24640).

2⁷⁴⁷⁶⁸⁴ 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 747684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1182720).

747684 is an abundant number, since it is smaller than the sum of its proper divisors (1617756).

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

747684 is a wasteful number, since it uses less digits than its factorization.

747684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 78 counting only the distinct ones).

The product of its digits is 37632, while the sum is 36.

The square root of 747684 is about 864.6872266895. The cubic root of 747684 is about 90.7624120718.

It can be divided in two parts, 747 and 684, that added together give a triangular number (1431 = T₅₃).

The spelling of 747684 in words is "seven hundred forty-seven thousand, six hundred eighty-four".