2663749 has 8 divisors (see below), whose sum is σ = 2932992. Its totient is φ = 2399040.

The previous prime is 2663711. The next prime is 2663761. The reversal of 2663749 is 9473662.

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

It is a cyclic number.

It is not a de Polignac number, because 2663749 - 2¹⁹ = 2139461 is a prime.

It is a d-powerful number, because it can be written as 2¹⁹ + 6⁷ + 6⁸ + 3⁷ + 7⁶ + 4⁵ + 9⁵ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2663779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172 + ... + 2314.

It is an arithmetic number, because the mean of its divisors is an integer number (366624).

2^2663749 is an apocalyptic number.

It is an amenable number.

2663749 is a deficient number, since it is larger than the sum of its proper divisors (269243).

2663749 is a wasteful number, since it uses less digits than its factorization.

2663749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2267.

The product of its digits is 54432, while the sum is 37.

The square root of 2663749 is about 1632.0995680411. The cubic root of 2663749 is about 138.6216614869.

The spelling of 2663749 in words is "two million, six hundred sixty-three thousand, seven hundred forty-nine".