744681 has 8 divisors (see below), whose sum is σ = 1134784. Its totient is φ = 425520.

The previous prime is 744677. The next prime is 744701. The reversal of 744681 is 186447.

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

It is not a de Polignac number, because 744681 - 2² = 744677 is a prime.

It is a super-2 number, since 2×744681² = 1109099583522, which contains 22 as substring.

744681 is a lucky number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (744641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17710 + ... + 17751.

It is an arithmetic number, because the mean of its divisors is an integer number (141848).

2⁷⁴⁴⁶⁸¹ is an apocalyptic number.

It is an amenable number.

744681 is a deficient number, since it is larger than the sum of its proper divisors (390103).

744681 is a wasteful number, since it uses less digits than its factorization.

744681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35471.

The product of its digits is 5376, while the sum is 30.

The square root of 744681 is about 862.9490135576. The cubic root of 744681 is about 90.6407362289.

Adding to 744681 its product of digits (5376), we get a palindrome (750057).

The spelling of 744681 in words is "seven hundred forty-four thousand, six hundred eighty-one".