747689 has 8 divisors (see below), whose sum is σ = 783360. Its totient is φ = 712800.

The previous prime is 747679. The next prime is 747713. The reversal of 747689 is 986747.

747689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 747689 - 2⁴ = 747673 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (747619) 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, 2624 + ... + 2894.

It is an arithmetic number, because the mean of its divisors is an integer number (97920).

2⁷⁴⁷⁶⁸⁹ is an apocalyptic number.

It is an amenable number.

747689 is a deficient number, since it is larger than the sum of its proper divisors (35671).

747689 is a wasteful number, since it uses less digits than its factorization.

747689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391.

The product of its digits is 84672, while the sum is 41.

The square root of 747689 is about 864.6901179035. The cubic root of 747689 is about 90.7626143904.

The spelling of 747689 in words is "seven hundred forty-seven thousand, six hundred eighty-nine".