2664386 has 4 divisors (see below), whose sum is σ = 3996582. Its totient is φ = 1332192.

The previous prime is 2664379. The next prime is 2664397. The reversal of 2664386 is 6834662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2660161 + 4225 = 1631^2 + 65^2 .

It is a super-3 number, since 3×2664386³ = 56743051021204633368, which contains 333 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666095 + ... + 666098.

2^2664386 is an apocalyptic number.

2664386 is a deficient number, since it is larger than the sum of its proper divisors (1332196).

2664386 is a wasteful number, since it uses less digits than its factorization.

2664386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332195.

The product of its digits is 41472, while the sum is 35.

The square root of 2664386 is about 1632.2947037836. The cubic root of 2664386 is about 138.6327104459.

The spelling of 2664386 in words is "two million, six hundred sixty-four thousand, three hundred eighty-six".