2662744649 has 16 divisors (see below), whose sum is σ = 2784844800. Its totient is φ = 2542822464.

The previous prime is 2662744639. The next prime is 2662744687. The reversal of 2662744649 is 9464472662.

It is a cyclic number.

It is not a de Polignac number, because 2662744649 - 2⁴ = 2662744633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2662744597 and 2662744606.

It is not an unprimeable number, because it can be changed into a prime (2662744639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1086944 + ... + 1089390.

It is an arithmetic number, because the mean of its divisors is an integer number (174052800).

Almost surely, 2^2662744649 is an apocalyptic number.

2662744649 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2662744649 is a deficient number, since it is larger than the sum of its proper divisors (122100151).

2662744649 is a wasteful number, since it uses less digits than its factorization.

2662744649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2872.

The product of its digits is 3483648, while the sum is 50.

The square root of 2662744649 is about 51601.7892034763. The cubic root of 2662744649 is about 1386.0423713419.

The spelling of 2662744649 in words is "two billion, six hundred sixty-two million, seven hundred forty-four thousand, six hundred forty-nine".