705634 has 4 divisors (see below), whose sum is σ = 1058454. Its totient is φ = 352816.

The previous prime is 705631. The next prime is 705643. The reversal of 705634 is 436507.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 585225 + 120409 = 765^2 + 347^2 .

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 705599 and 705608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (705631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176407 + ... + 176410.

2⁷⁰⁵⁶³⁴ is an apocalyptic number.

705634 is a deficient number, since it is larger than the sum of its proper divisors (352820).

705634 is a wasteful number, since it uses less digits than its factorization.

705634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352819.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 705634 is about 840.0202378514. The cubic root of 705634 is about 89.0279758873.

The spelling of 705634 in words is "seven hundred five thousand, six hundred thirty-four".