2763649 has 6 divisors (see below), whose sum is σ = 3214914. Its totient is φ = 2368800.

The previous prime is 2763643. The next prime is 2763659. The reversal of 2763649 is 9463672.

It can be written as a sum of positive squares in only one way, i.e., 2480625 + 283024 = 1575^2 + 532^2 .

It is not a de Polignac number, because 2763649 - 2⁵ = 2763617 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 7⁴ + 6² + 3⁵ + 6⁸ + 4¹⁰ + 9 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2763643) 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, 28152 + ... + 28249.

It is an arithmetic number, because the mean of its divisors is an integer number (535819).

2^2763649 is an apocalyptic number.

It is an amenable number.

2763649 is a deficient number, since it is larger than the sum of its proper divisors (451265).

2763649 is an equidigital number, since it uses as much as digits as its factorization.

2763649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56415 (or 56408 counting only the distinct ones).

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

The square root of 2763649 is about 1662.4226297786. The cubic root of 2763649 is about 140.3333722007. Note that the first 4 decimals are identical.

The spelling of 2763649 in words is "two million, seven hundred sixty-three thousand, six hundred forty-nine".