2649066663 has 4 divisors (see below), whose sum is σ = 3532088888. Its totient is φ = 1766044440.

The previous prime is 2649066649. The next prime is 2649066691. The reversal of 2649066663 is 3666609462.

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

It is not a de Polignac number, because 2649066663 - 2¹² = 2649062567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649066613) 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, 441511108 + ... + 441511113.

It is an arithmetic number, because the mean of its divisors is an integer number (883022222).

Almost surely, 2^2649066663 is an apocalyptic number.

2649066663 is a deficient number, since it is larger than the sum of its proper divisors (883022225).

2649066663 is an equidigital number, since it uses as much as digits as its factorization.

2649066663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883022224.

The product of its (nonzero) digits is 1679616, while the sum is 48.

The square root of 2649066663 is about 51469.0845362534. The cubic root of 2649066663 is about 1383.6650220001.

The spelling of 2649066663 in words is "two billion, six hundred forty-nine million, sixty-six thousand, six hundred sixty-three".