705481009 has 4 divisors (see below), whose sum is σ = 705545316. Its totient is φ = 705416704.

The previous prime is 705481003. The next prime is 705481019. The reversal of 705481009 is 900184507.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 243360000 + 462121009 = 15600^2 + 21497^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-705481009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (705481003) 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, 11104 + ... + 39169.

It is an arithmetic number, because the mean of its divisors is an integer number (176386329).

Almost surely, 2^705481009 is an apocalyptic number.

It is an amenable number.

705481009 is a deficient number, since it is larger than the sum of its proper divisors (64307).

705481009 is a wasteful number, since it uses less digits than its factorization.

705481009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64306.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 705481009 is about 26560.8924737103. The cubic root of 705481009 is about 890.2154126562.

The spelling of 705481009 in words is "seven hundred five million, four hundred eighty-one thousand, nine".