2663739 has 16 divisors (see below), whose sum is σ = 4250400. Its totient is φ = 1639008.

The previous prime is 2663711. The next prime is 2663761. The reversal of 2663739 is 9373662.

2663739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2663739 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2663779) 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 15 ways as a sum of consecutive naturals, for example, 3444 + ... + 4145.

It is an arithmetic number, because the mean of its divisors is an integer number (265650).

2^2663739 is an apocalyptic number.

2663739 is a deficient number, since it is larger than the sum of its proper divisors (1586661).

2663739 is a wasteful number, since it uses less digits than its factorization.

2663739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7611 (or 7605 counting only the distinct ones).

The product of its digits is 40824, while the sum is 36.

The square root of 2663739 is about 1632.0965044997. The cubic root of 2663739 is about 138.6214880198.

It can be divided in two parts, 266 and 3739, that added together give a triangular number (4005 = T₈₉).

The spelling of 2663739 in words is "two million, six hundred sixty-three thousand, seven hundred thirty-nine".