2649743 has 4 divisors (see below), whose sum is σ = 2663808. Its totient is φ = 2635680.

The previous prime is 2649733. The next prime is 2649769. The reversal of 2649743 is 3479462.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2649743 - 2⁴ = 2649727 is a prime.

It is a super-2 number, since 2×2649743² = 14042275932098, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2 + 6³ + 4² + 9⁴ + 7² + 4¹⁰ + 3¹³ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6746 + ... + 7127.

It is an arithmetic number, because the mean of its divisors is an integer number (665952).

2^2649743 is an apocalyptic number.

2649743 is a deficient number, since it is larger than the sum of its proper divisors (14065).

2649743 is a wasteful number, since it uses less digits than its factorization.

2649743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14064.

The product of its digits is 36288, while the sum is 35.

The square root of 2649743 is about 1627.8031207735. The cubic root of 2649743 is about 138.3782767146.

The spelling of 2649743 in words is "two million, six hundred forty-nine thousand, seven hundred forty-three".