9664431 has 8 divisors (see below), whose sum is σ = 14726784. Its totient is φ = 5522520.

The previous prime is 9664429. The next prime is 9664451. The reversal of 9664431 is 1344669.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9664431 - 2¹ = 9664429 is a prime.

It is a super-2 number, since 2×9664431² = 186802453107522, which contains 22 as substring.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 9664392 and 9664401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9664411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230085 + ... + 230126.

It is an arithmetic number, because the mean of its divisors is an integer number (1840848).

Almost surely, 2^9664431 is an apocalyptic number.

9664431 is a deficient number, since it is larger than the sum of its proper divisors (5062353).

9664431 is a wasteful number, since it uses less digits than its factorization.

9664431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460221.

The product of its digits is 15552, while the sum is 33.

The square root of 9664431 is about 3108.7667973008. The cubic root of 9664431 is about 213.0061273557.

The spelling of 9664431 in words is "nine million, six hundred sixty-four thousand, four hundred thirty-one".