10664378 has 4 divisors (see below), whose sum is σ = 15996570. Its totient is φ = 5332188.

The previous prime is 10664371. The next prime is 10664449. The reversal of 10664378 is 87346601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87346601 = 547 ⋅159683.

It can be written as a sum of positive squares in only one way, i.e., 10582009 + 82369 = 3253^2 + 287^2 .

It is a super-2 number, since 2×10664378² = 227457916253768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10664371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2666093 + ... + 2666096.

Almost surely, 2^10664378 is an apocalyptic number.

10664378 is a deficient number, since it is larger than the sum of its proper divisors (5332192).

10664378 is an equidigital number, since it uses as much as digits as its factorization.

10664378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5332191.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 10664378 is about 3265.6359258190. The cubic root of 10664378 is about 220.1127383609.

The spelling of 10664378 in words is "ten million, six hundred sixty-four thousand, three hundred seventy-eight".