2664394 has 8 divisors (see below), whose sum is σ = 4005828. Its totient is φ = 1329120.

The previous prime is 2664379. The next prime is 2664397. The reversal of 2664394 is 4934662.

2664394 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2608225 + 56169 = 1615^2 + 237^2 .

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

It is a d-powerful number, because it can be written as 2²¹ + 6⁷ + 6⁷ + 4² + 3⁸ + 9³ + 4³ .

It is not an unprimeable number, because it can be changed into a prime (2664397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237 + ... + 2320.

2^2664394 is an apocalyptic number.

2664394 is a deficient number, since it is larger than the sum of its proper divisors (1341434).

2664394 is a wasteful number, since it uses less digits than its factorization.

2664394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3080.

The product of its digits is 31104, while the sum is 34.

The square root of 2664394 is about 1632.2971543196. The cubic root of 2664394 is about 138.6328491971.

The spelling of 2664394 in words is "two million, six hundred sixty-four thousand, three hundred ninety-four".