705629 has 4 divisors (see below), whose sum is σ = 708576. Its totient is φ = 702684.

The previous prime is 705613. The next prime is 705631. The reversal of 705629 is 926507.

705629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 705629 - 2⁴ = 705613 is a prime.

It is a Duffinian 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 3 ways as a sum of consecutive naturals, for example, 1079 + ... + 1604.

It is an arithmetic number, because the mean of its divisors is an integer number (177144).

2⁷⁰⁵⁶²⁹ is an apocalyptic number.

It is an amenable number.

705629 is a deficient number, since it is larger than the sum of its proper divisors (2947).

705629 is a wasteful number, since it uses less digits than its factorization.

705629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2946.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 705629 is about 840.0172617274. The cubic root of 705629 is about 89.0277656079.

Subtracting from 705629 its sum of digits (29), we obtain a square (705600 = 840²).

The spelling of 705629 in words is "seven hundred five thousand, six hundred twenty-nine".