9664451 has 2 divisors, whose sum is σ = 9664452. Its totient is φ = 9664450.

The previous prime is 9664429. The next prime is 9664463. The reversal of 9664451 is 1544669.

9664451 is nontrivially palindromic in base 11.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9664451 is a prime.

It is a super-2 number, since 2×9664451² = 186803226262802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9664411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4832225 + 4832226.

It is an arithmetic number, because the mean of its divisors is an integer number (4832226).

Almost surely, 2^9664451 is an apocalyptic number.

9664451 is a deficient number, since it is larger than the sum of its proper divisors (1).

9664451 is an equidigital number, since it uses as much as digits as its factorization.

9664451 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 35.

The square root of 9664451 is about 3108.7700140088. The cubic root of 9664451 is about 213.0062742904.

The spelling of 9664451 in words is "nine million, six hundred sixty-four thousand, four hundred fifty-one".