738684 has 54 divisors (see below), whose sum is σ = 2011464. Its totient is φ = 228480.

The previous prime is 738677. The next prime is 738707. The reversal of 738684 is 486837.

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

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 10369 + ... + 10439.

2⁷³⁸⁶⁸⁴ 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 738684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1005732).

738684 is an abundant number, since it is smaller than the sum of its proper divisors (1272780).

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

738684 is a wasteful number, since it uses less digits than its factorization.

738684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115 (or 93 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 738684 is about 859.4672768640. The cubic root of 738684 is about 90.3967667938.

Adding to 738684 its sum of digits (36), we get a triangular number (738720 = T₁₂₁₅).

The spelling of 738684 in words is "seven hundred thirty-eight thousand, six hundred eighty-four".