9651641 has 4 divisors (see below), whose sum is σ = 9673872. Its totient is φ = 9629412.

The previous prime is 9651637. The next prime is 9651643. The reversal of 9651641 is 1461569.

9651641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1461569 = 337 ⋅4337.

It is a cyclic number.

It is not a de Polignac number, because 9651641 - 2² = 9651637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 9651598 and 9651607.

It is not an unprimeable number, because it can be changed into a prime (9651643) 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, 10451 + ... + 11336.

It is an arithmetic number, because the mean of its divisors is an integer number (2418468).

Almost surely, 2^9651641 is an apocalyptic number.

It is an amenable number.

9651641 is a deficient number, since it is larger than the sum of its proper divisors (22231).

9651641 is a wasteful number, since it uses less digits than its factorization.

9651641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22230.

The product of its digits is 6480, while the sum is 32.

The square root of 9651641 is about 3106.7090304694. The cubic root of 9651641 is about 212.9121210950.

The spelling of 9651641 in words is "nine million, six hundred fifty-one thousand, six hundred forty-one".