2664626 has 4 divisors (see below), whose sum is σ = 3996942. Its totient is φ = 1332312.

The previous prime is 2664601. The next prime is 2664643. The reversal of 2664626 is 6264662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6264662 = 2 ⋅3132331.

It can be written as a sum of positive squares in only one way, i.e., 2399401 + 265225 = 1549^2 + 515^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2664592 and 2664601.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666155 + ... + 666158.

2^2664626 is an apocalyptic number.

2664626 is a deficient number, since it is larger than the sum of its proper divisors (1332316).

2664626 is a wasteful number, since it uses less digits than its factorization.

2664626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332315.

The product of its digits is 20736, while the sum is 32.

The square root of 2664626 is about 1632.3682182645. The cubic root of 2664626 is about 138.6368728622.

The spelling of 2664626 in words is "two million, six hundred sixty-four thousand, six hundred twenty-six".