2664554 has 4 divisors (see below), whose sum is σ = 3996834. Its totient is φ = 1332276.

The previous prime is 2664553. The next prime is 2664577. The reversal of 2664554 is 4554662.

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., 2181529 + 483025 = 1477^2 + 695^2 .

It is an Ulam number.

It is a d-powerful number, because it can be written as 2²¹ + 6⁷ + 6⁷ + 4⁴ + 5⁵ + 5⁵ + 4⁵ .

It is a self number, because there is not a number n which added to its sum of digits gives 2664554.

It is not an unprimeable number, because it can be changed into a prime (2664551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 666137 + ... + 666140.

2^2664554 is an apocalyptic number.

2664554 is a deficient number, since it is larger than the sum of its proper divisors (1332280).

2664554 is a wasteful number, since it uses less digits than its factorization.

2664554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1332279.

The product of its digits is 28800, while the sum is 32.

The square root of 2664554 is about 1632.3461642679. The cubic root of 2664554 is about 138.6356241636.

Adding to 2664554 its sum of digits (32), we get a triangular number (2664586 = T₂₃₀₈).

The spelling of 2664554 in words is "two million, six hundred sixty-four thousand, five hundred fifty-four".