2749647 has 8 divisors (see below), whose sum is σ = 3689344. Its totient is φ = 1821528.

The previous prime is 2749639. The next prime is 2749667. The reversal of 2749647 is 7469472.

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

It is not a de Polignac number, because 2749647 - 2³ = 2749639 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 7³ + 4⁶ + 9² + 6⁸ + 4¹⁰ + 7⁵ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2749667) 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, 2323 + ... + 3300.

It is an arithmetic number, because the mean of its divisors is an integer number (461168).

2^2749647 is an apocalyptic number.

2749647 is a deficient number, since it is larger than the sum of its proper divisors (939697).

2749647 is a wasteful number, since it uses less digits than its factorization.

2749647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5789.

The product of its digits is 84672, while the sum is 39.

The square root of 2749647 is about 1658.2059582573. The cubic root of 2749647 is about 140.0959716103.

The spelling of 2749647 in words is "two million, seven hundred forty-nine thousand, six hundred forty-seven".