706731 has 4 divisors (see below), whose sum is σ = 942312. Its totient is φ = 471152.

The previous prime is 706729. The next prime is 706733. The reversal of 706731 is 137607.

706731 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 an emirpimes, since its reverse is a distinct semiprime: 137607 = 3 ⋅45869.

It is an interprime number because it is at equal distance from previous prime (706729) and next prime (706733).

It is a cyclic number.

It is not a de Polignac number, because 706731 - 2¹ = 706729 is a prime.

It is a super-2 number, since 2×706731² = 998937412722, which contains 22 as substring.

It is a D-number.

It is a plaindrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 706731.

It is not an unprimeable number, because it can be changed into a prime (706733) 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, 117786 + ... + 117791.

It is an arithmetic number, because the mean of its divisors is an integer number (235578).

2⁷⁰⁶⁷³¹ is an apocalyptic number.

706731 is a deficient number, since it is larger than the sum of its proper divisors (235581).

706731 is a wasteful number, since it uses less digits than its factorization.

706731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235580.

The product of its (nonzero) digits is 882, while the sum is 24.

The square root of 706731 is about 840.6729447294. The cubic root of 706731 is about 89.0740871966.

The spelling of 706731 in words is "seven hundred six thousand, seven hundred thirty-one".