2664739 has 8 divisors (see below), whose sum is σ = 3322368. Its totient is φ = 2076360.

The previous prime is 2664721. The next prime is 2664763. The reversal of 2664739 is 9374662.

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

It is not a de Polignac number, because 2664739 - 2⁵ = 2664707 is a prime.

It is a d-powerful number, because it can be written as 2²¹ + 6⁷ + 6⁷ + 4⁵ + 7² + 3⁸ + 9² .

It is a junction number, because it is equal to n+sod(n) for n = 2664698 and 2664707.

It is not an unprimeable number, because it can be changed into a prime (2664709) 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, 17227 + ... + 17380.

It is an arithmetic number, because the mean of its divisors is an integer number (415296).

2^2664739 is an apocalyptic number.

2664739 is a deficient number, since it is larger than the sum of its proper divisors (657629).

2664739 is a wasteful number, since it uses less digits than its factorization.

2664739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34625.

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

The square root of 2664739 is about 1632.4028301862. The cubic root of 2664739 is about 138.6388325800.

It can be divided in two parts, 2664 and 739, that added together give a triangular number (3403 = T₈₂).

The spelling of 2664739 in words is "two million, six hundred sixty-four thousand, seven hundred thirty-nine".