706390 has 8 divisors (see below), whose sum is σ = 1271520. Its totient is φ = 282552.

The previous prime is 706373. The next prime is 706403. The reversal of 706390 is 93607.

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

It is a congruent number.

It is an unprimeable number.

706390 is an untouchable number, because it is not equal to the sum of proper divisors of any 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 3 ways as a sum of consecutive naturals, for example, 35310 + ... + 35329.

It is an arithmetic number, because the mean of its divisors is an integer number (158940).

2⁷⁰⁶³⁹⁰ is an apocalyptic number.

706390 is a deficient number, since it is larger than the sum of its proper divisors (565130).

706390 is a wasteful number, since it uses less digits than its factorization.

706390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70646.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 706390 is about 840.4701065475. The cubic root of 706390 is about 89.0597587132.

Adding to 706390 its reverse (93607), we get a palindrome (799997).

The spelling of 706390 in words is "seven hundred six thousand, three hundred ninety".