738681 has 8 divisors (see below), whose sum is σ = 994080. Its totient is φ = 487872.

The previous prime is 738677. The next prime is 738707. The reversal of 738681 is 186837.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 738681 - 2² = 738677 is a prime.

It is a super-2 number, since 2×738681² = 1091299239522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (738581) 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 7 ways as a sum of consecutive naturals, for example, 751 + ... + 1428.

It is an arithmetic number, because the mean of its divisors is an integer number (124260).

2⁷³⁸⁶⁸¹ is an apocalyptic number.

It is an amenable number.

738681 is a deficient number, since it is larger than the sum of its proper divisors (255399).

738681 is a wasteful number, since it uses less digits than its factorization.

738681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2295.

The product of its digits is 8064, while the sum is 33.

The square root of 738681 is about 859.4655315951. The cubic root of 738681 is about 90.3966444182.

The spelling of 738681 in words is "seven hundred thirty-eight thousand, six hundred eighty-one".