9705693890 has 16 divisors (see below), whose sum is σ = 18497911032. Its totient is φ = 3653908224.

The previous prime is 9705693863. The next prime is 9705693913. The reversal of 9705693890 is 983965079.

9705693890 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 7884196849 + 1821497041 = 88793^2 + 42679^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28545989 + ... + 28546328.

Almost surely, 2^9705693890 is an apocalyptic number.

9705693890 is a deficient number, since it is larger than the sum of its proper divisors (8792217142).

9705693890 is a wasteful number, since it uses less digits than its factorization.

9705693890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57092341.

The product of its (nonzero) digits is 3674160, while the sum is 56.

The square root of 9705693890 is about 98517.4801240876. The cubic root of 9705693890 is about 2133.0884458214.

The spelling of 9705693890 in words is "nine billion, seven hundred five million, six hundred ninety-three thousand, eight hundred ninety".