9623641 has 4 divisors (see below), whose sum is σ = 9649152. Its totient is φ = 9598132.

The previous prime is 9623623. The next prime is 9623657. The reversal of 9623641 is 1463269.

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: 1463269 = 1123 ⋅1303.

It is a cyclic number.

It is not a de Polignac number, because 9623641 - 2¹⁹ = 9099353 is a prime.

It is a super-2 number, since 2×9623641² = 185228932193762, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9623681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12181 + ... + 12946.

It is an arithmetic number, because the mean of its divisors is an integer number (2412288).

Almost surely, 2^9623641 is an apocalyptic number.

It is an amenable number.

9623641 is a deficient number, since it is larger than the sum of its proper divisors (25511).

9623641 is a wasteful number, since it uses less digits than its factorization.

9623641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25510.

The product of its digits is 7776, while the sum is 31.

The square root of 9623641 is about 3102.1993810843. The cubic root of 9623641 is about 212.7060313178.

The spelling of 9623641 in words is "nine million, six hundred twenty-three thousand, six hundred forty-one".