9651647 has 2 divisors, whose sum is σ = 9651648. Its totient is φ = 9651646.

The previous prime is 9651643. The next prime is 9651659. The reversal of 9651647 is 7461569.

It is a weak prime.

It is an emirp because it is prime and its reverse (7461569) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9651647 - 2² = 9651643 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9651647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9651643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4825823 + 4825824.

It is an arithmetic number, because the mean of its divisors is an integer number (4825824).

Almost surely, 2^9651647 is an apocalyptic number.

9651647 is a deficient number, since it is larger than the sum of its proper divisors (1).

9651647 is an equidigital number, since it uses as much as digits as its factorization.

9651647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 9651647 is about 3106.7099961213. The cubic root of 9651647 is about 212.9121652143.

The spelling of 9651647 in words is "nine million, six hundred fifty-one thousand, six hundred forty-seven".