705669 has 8 divisors (see below), whose sum is σ = 954432. Its totient is φ = 463680.

The previous prime is 705643. The next prime is 705689. The reversal of 705669 is 966507.

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

It is not a de Polignac number, because 705669 - 2¹⁵ = 672901 is a prime.

It is a super-2 number, since 2×705669² = 995937475122, which contains 22 as substring.

705669 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705689) 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, 1444 + ... + 1869.

It is an arithmetic number, because the mean of its divisors is an integer number (119304).

2⁷⁰⁵⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

705669 is a deficient number, since it is larger than the sum of its proper divisors (248763).

705669 is a wasteful number, since it uses less digits than its factorization.

705669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3387.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 705669 is about 840.0410704245. The cubic root of 705669 is about 89.0294478155.

The spelling of 705669 in words is "seven hundred five thousand, six hundred sixty-nine".