705985730 has 8 divisors (see below), whose sum is σ = 1270774332. Its totient is φ = 282394288.

The previous prime is 705985729. The next prime is 705985747. The reversal of 705985730 is 37589507.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 661055521 + 44930209 = 25711^2 + 6703^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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, 35299277 + ... + 35299296.

Almost surely, 2^705985730 is an apocalyptic number.

705985730 is a deficient number, since it is larger than the sum of its proper divisors (564788602).

705985730 is a wasteful number, since it uses less digits than its factorization.

705985730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70598580.

The product of its (nonzero) digits is 264600, while the sum is 44.

The square root of 705985730 is about 26570.3919805486. The cubic root of 705985730 is about 890.4276571156.

The spelling of 705985730 in words is "seven hundred five million, nine hundred eighty-five thousand, seven hundred thirty".