9642691 has 4 divisors (see below), whose sum is σ = 9758952. Its totient is φ = 9526432.

The previous prime is 9642683. The next prime is 9642701. The reversal of 9642691 is 1962469.

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

It is a cyclic number.

It is not a de Polignac number, because 9642691 - 2³ = 9642683 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9642691.

It is not an unprimeable number, because it can be changed into a prime (9642601) 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, 58006 + ... + 58171.

It is an arithmetic number, because the mean of its divisors is an integer number (2439738).

Almost surely, 2^9642691 is an apocalyptic number.

9642691 is a deficient number, since it is larger than the sum of its proper divisors (116261).

9642691 is a wasteful number, since it uses less digits than its factorization.

9642691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116260.

The product of its digits is 23328, while the sum is 37.

The square root of 9642691 is about 3105.2682653838. The cubic root of 9642691 is about 212.8462893606.

It can be divided in two parts, 964 and 2691, that added together give a triangular number (3655 = T₈₅).

The spelling of 9642691 in words is "nine million, six hundred forty-two thousand, six hundred ninety-one".