9905646734 has 16 divisors (see below), whose sum is σ = 16157702448. Its totient is φ = 4535494272.

The previous prime is 9905646731. The next prime is 9905646763. The reversal of 9905646734 is 4376465099.

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 7 ways as a sum of consecutive naturals, for example, 3935804 + ... + 3938319.

It is an arithmetic number, because the mean of its divisors is an integer number (1009856403).

Almost surely, 2^9905646734 is an apocalyptic number.

9905646734 is a deficient number, since it is larger than the sum of its proper divisors (6252055714).

9905646734 is a wasteful number, since it uses less digits than its factorization.

9905646734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7874179.

The product of its (nonzero) digits is 4898880, while the sum is 53.

The square root of 9905646734 is about 99527.1155715868. The cubic root of 9905646734 is about 2147.6373349261.

The spelling of 9905646734 in words is "nine billion, nine hundred five million, six hundred forty-six thousand, seven hundred thirty-four".