9905646733 has 4 divisors (see below), whose sum is σ = 9905982748. Its totient is φ = 9905310720.

The previous prime is 9905646731. The next prime is 9905646763. The reversal of 9905646733 is 3376465099.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4029964324 + 5875682409 = 63482^2 + 76653^2 .

It is a cyclic number.

It is not a de Polignac number, because 9905646733 - 2¹ = 9905646731 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9905646731) 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, 119028 + ... + 184333.

It is an arithmetic number, because the mean of its divisors is an integer number (2476495687).

Almost surely, 2^9905646733 is an apocalyptic number.

It is an amenable number.

9905646733 is a deficient number, since it is larger than the sum of its proper divisors (336015).

9905646733 is a wasteful number, since it uses less digits than its factorization.

9905646733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336014.

The product of its (nonzero) digits is 3674160, while the sum is 52.

The square root of 9905646733 is about 99527.1155665631. The cubic root of 9905646733 is about 2147.6373348538.

The spelling of 9905646733 in words is "nine billion, nine hundred five million, six hundred forty-six thousand, seven hundred thirty-three".