9646632078 has 32 divisors (see below), whose sum is σ = 20511968256. Its totient is φ = 3017702688.

The previous prime is 9646632071. The next prime is 9646632097. The reversal of 9646632078 is 8702366469.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 9646632078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9646632071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 652150 + ... + 666777.

It is an arithmetic number, because the mean of its divisors is an integer number (640999008).

Almost surely, 2^9646632078 is an apocalyptic number.

9646632078 is an abundant number, since it is smaller than the sum of its proper divisors (10865336178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9646632078 is a wasteful number, since it uses less digits than its factorization.

9646632078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319008.

The product of its (nonzero) digits is 2612736, while the sum is 51.

The square root of 9646632078 is about 98217.2697543563. The cubic root of 9646632078 is about 2128.7528298118.

The spelling of 9646632078 in words is "nine billion, six hundred forty-six million, six hundred thirty-two thousand, seventy-eight".