2744649 has 6 divisors (see below), whose sum is σ = 3964506. Its totient is φ = 1829760.

The previous prime is 2744639. The next prime is 2744689. The reversal of 2744649 is 9464472.

2744649 is a `hidden beast` number, since 2 + 7 + 4 + 4 + 649 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2663424 + 81225 = 1632^2 + 285^2 .

It is not a de Polignac number, because 2744649 - 2⁵ = 2744617 is a prime.

It is a Curzon number.

2744649 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2744629) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 152472 + ... + 152489.

It is an arithmetic number, because the mean of its divisors is an integer number (660751).

2^2744649 is an apocalyptic number.

It is an amenable number.

2744649 is a deficient number, since it is larger than the sum of its proper divisors (1219857).

2744649 is a wasteful number, since it uses less digits than its factorization.

2744649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304967 (or 304964 counting only the distinct ones).

The product of its digits is 48384, while the sum is 36.

The square root of 2744649 is about 1656.6982223688. The cubic root of 2744649 is about 140.0110365449.

It can be divided in two parts, 27446 and 49, that added together give a triangular number (27495 = T₂₃₄).

The spelling of 2744649 in words is "two million, seven hundred forty-four thousand, six hundred forty-nine".