9664642 has 16 divisors (see below), whose sum is σ = 15664320. Its totient is φ = 4445712.

The previous prime is 9664631. The next prime is 9664651. The reversal of 9664642 is 2464669.

9664642 is nontrivially palindromic in base 7.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12709 + ... + 13447.

It is an arithmetic number, because the mean of its divisors is an integer number (979020).

Almost surely, 2^9664642 is an apocalyptic number.

9664642 is a deficient number, since it is larger than the sum of its proper divisors (5999678).

9664642 is a wasteful number, since it uses less digits than its factorization.

9664642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257.

The product of its digits is 62208, while the sum is 37.

The square root of 9664642 is about 3108.8007334019. The cubic root of 9664642 is about 213.0076775062.

The spelling of 9664642 in words is "nine million, six hundred sixty-four thousand, six hundred forty-two".