706491 has 12 divisors (see below), whose sum is σ = 1065168. Its totient is φ = 450384.

The previous prime is 706487. The next prime is 706499. The reversal of 706491 is 194607.

It is not a de Polignac number, because 706491 - 2² = 706487 is a prime.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (706499) 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 11 ways as a sum of consecutive naturals, for example, 1500 + ... + 1913.

It is an arithmetic number, because the mean of its divisors is an integer number (88764).

2⁷⁰⁶⁴⁹¹ is an apocalyptic number.

706491 is a deficient number, since it is larger than the sum of its proper divisors (358677).

706491 is a wasteful number, since it uses less digits than its factorization.

706491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3442 (or 3439 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 706491 is about 840.5301898207. The cubic root of 706491 is about 89.0640031141.

It can be divided in two parts, 70 and 6491, that added together give a 8-th power (6561 = 3⁸).

The spelling of 706491 in words is "seven hundred six thousand, four hundred ninety-one".