2756649 has 16 divisors (see below), whose sum is σ = 4233600. Its totient is φ = 1562880.

The previous prime is 2756639. The next prime is 2756659. The reversal of 2756649 is 9466572.

It is an interprime number because it is at equal distance from previous prime (2756639) and next prime (2756659).

It is not a de Polignac number, because 2756649 - 2⁷ = 2756521 is a prime.

It is a super-2 number, since 2×2756649² = 15198227418402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2756609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2689 + ... + 3569.

It is an arithmetic number, because the mean of its divisors is an integer number (264600).

2^2756649 is an apocalyptic number.

It is an amenable number.

2756649 is a deficient number, since it is larger than the sum of its proper divisors (1476951).

2756649 is a wasteful number, since it uses less digits than its factorization.

2756649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040.

The product of its digits is 90720, while the sum is 39.

The square root of 2756649 is about 1660.3159337909. The cubic root of 2756649 is about 140.2147893472.

The spelling of 2756649 in words is "two million, seven hundred fifty-six thousand, six hundred forty-nine".