706511 has 4 divisors (see below), whose sum is σ = 760872. Its totient is φ = 652152.

The previous prime is 706507. The next prime is 706523. The reversal of 706511 is 115607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 115607 = 193 ⋅599.

It is a cyclic number.

It is not a de Polignac number, because 706511 - 2² = 706507 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 (706561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27161 + ... + 27186.

It is an arithmetic number, because the mean of its divisors is an integer number (190218).

2⁷⁰⁶⁵¹¹ is an apocalyptic number.

706511 is a deficient number, since it is larger than the sum of its proper divisors (54361).

706511 is a wasteful number, since it uses less digits than its factorization.

706511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54360.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 706511 is about 840.5420869891. The cubic root of 706511 is about 89.0648435415.

The spelling of 706511 in words is "seven hundred six thousand, five hundred eleven".