9646815063 has 4 divisors (see below), whose sum is σ = 12862420088. Its totient is φ = 6431210040.

The previous prime is 9646815041. The next prime is 9646815067. The reversal of 9646815063 is 3605186469.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3605186469 = 3 ⋅1201728823.

It is not a de Polignac number, because 9646815063 - 2²¹ = 9644717911 is a prime.

It is a super-2 number, since 2×9646815063² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9646815067) 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, 1607802508 + ... + 1607802513.

It is an arithmetic number, because the mean of its divisors is an integer number (3215605022).

Almost surely, 2^9646815063 is an apocalyptic number.

9646815063 is a deficient number, since it is larger than the sum of its proper divisors (3215605025).

9646815063 is a wasteful number, since it uses less digits than its factorization.

9646815063 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215605024.

The product of its (nonzero) digits is 933120, while the sum is 48.

The square root of 9646815063 is about 98218.2012816362. The cubic root of 9646815063 is about 2128.7662896864.

The spelling of 9646815063 in words is "nine billion, six hundred forty-six million, eight hundred fifteen thousand, sixty-three".