705871994 has 24 divisors (see below), whose sum is σ = 1134261468. Its totient is φ = 328317440.

The previous prime is 705871981. The next prime is 705871997. The reversal of 705871994 is 499178507.

It can be written as a sum of positive squares in 6 ways, for example, as 347337769 + 358534225 = 18637^2 + 18935^2 .

It is not an unprimeable number, because it can be changed into a prime (705871997) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 268004 + ... + 270624.

Almost surely, 2^705871994 is an apocalyptic number.

705871994 is a deficient number, since it is larger than the sum of its proper divisors (428389474).

705871994 is a wasteful number, since it uses less digits than its factorization.

705871994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2818 (or 2729 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 50.

The square root of 705871994 is about 26568.2516172969. The cubic root of 705871994 is about 890.3798378682.

The spelling of 705871994 in words is "seven hundred five million, eight hundred seventy-one thousand, nine hundred ninety-four".