9664378 has 8 divisors (see below), whose sum is σ = 14700960. Its totient is φ = 4764060.

The previous prime is 9664367. The next prime is 9664399. The reversal of 9664378 is 8734669.

It is a happy number.

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

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33888 + ... + 34171.

It is an arithmetic number, because the mean of its divisors is an integer number (1837620).

Almost surely, 2^9664378 is an apocalyptic number.

9664378 is a deficient number, since it is larger than the sum of its proper divisors (5036582).

9664378 is a wasteful number, since it uses less digits than its factorization.

9664378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68132.

The product of its digits is 217728, while the sum is 43.

The square root of 9664378 is about 3108.7582730087. The cubic root of 9664378 is about 213.0057379779.

It can be divided in two parts, 96643 and 78, that added together give a square (96721 = 311²).

The spelling of 9664378 in words is "nine million, six hundred sixty-four thousand, three hundred seventy-eight".