706250609 has 4 divisors (see below), whose sum is σ = 706340580. Its totient is φ = 706160640.

The previous prime is 706250603. The next prime is 706250621. The reversal of 706250609 is 906052607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 906052607 = 15761 ⋅57487.

It can be written as a sum of positive squares in 2 ways, for example, as 663217009 + 43033600 = 25753^2 + 6560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-706250609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (706250603) 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, 31952 + ... + 49329.

It is an arithmetic number, because the mean of its divisors is an integer number (176585145).

Almost surely, 2^706250609 is an apocalyptic number.

It is an amenable number.

706250609 is a deficient number, since it is larger than the sum of its proper divisors (89971).

706250609 is an equidigital number, since it uses as much as digits as its factorization.

706250609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89970.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 706250609 is about 26575.3759898143. The cubic root of 706250609 is about 890.5390031323.

The spelling of 706250609 in words is "seven hundred six million, two hundred fifty thousand, six hundred nine".