9646748691 has 4 divisors (see below), whose sum is σ = 12862331592. Its totient is φ = 6431165792.

The previous prime is 9646748627. The next prime is 9646748737. The reversal of 9646748691 is 1968476469.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1968476469 = 3 ⋅656158823.

It is a cyclic number.

It is not a de Polignac number, because 9646748691 - 2⁶ = 9646748627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9646748291) 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, 1607791446 + ... + 1607791451.

It is an arithmetic number, because the mean of its divisors is an integer number (3215582898).

Almost surely, 2^9646748691 is an apocalyptic number.

9646748691 is a deficient number, since it is larger than the sum of its proper divisors (3215582901).

9646748691 is a wasteful number, since it uses less digits than its factorization.

9646748691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3215582900.

The product of its digits is 15676416, while the sum is 60.

The square root of 9646748691 is about 98217.8634007073. The cubic root of 9646748691 is about 2128.7614075639.

The spelling of 9646748691 in words is "nine billion, six hundred forty-six million, seven hundred forty-eight thousand, six hundred ninety-one".