747705 has 16 divisors (see below), whose sum is σ = 1367424. Its totient is φ = 341760.

The previous prime is 747679. The next prime is 747713. The reversal of 747705 is 507747.

It is a happy number.

It is not a de Polignac number, because 747705 - 2⁵ = 747673 is a prime.

747705 is a lucky number.

It is a nialpdrome in base 15.

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 15 ways as a sum of consecutive naturals, for example, 3456 + ... + 3665.

It is an arithmetic number, because the mean of its divisors is an integer number (85464).

2⁷⁴⁷⁷⁰⁵ is an apocalyptic number.

It is an amenable number.

747705 is a deficient number, since it is larger than the sum of its proper divisors (619719).

747705 is a wasteful number, since it uses less digits than its factorization.

747705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7136.

The product of its (nonzero) digits is 6860, while the sum is 30.

The square root of 747705 is about 864.6993697234. The cubic root of 747705 is about 90.7632618037.

The spelling of 747705 in words is "seven hundred forty-seven thousand, seven hundred five".