9964651 has 2 divisors, whose sum is σ = 9964652. Its totient is φ = 9964650.

The previous prime is 9964639. The next prime is 9964667. The reversal of 9964651 is 1564699.

It is a weak prime.

It is an emirp because it is prime and its reverse (1564699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9964651 - 2¹³ = 9956459 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9964631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4982325 + 4982326.

It is an arithmetic number, because the mean of its divisors is an integer number (4982326).

Almost surely, 2^9964651 is an apocalyptic number.

9964651 is a deficient number, since it is larger than the sum of its proper divisors (1).

9964651 is an equidigital number, since it uses as much as digits as its factorization.

9964651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 40.

The square root of 9964651 is about 3156.6835444815. The cubic root of 9964651 is about 215.1893122551.

The spelling of 9964651 in words is "nine million, nine hundred sixty-four thousand, six hundred fifty-one".