2649066917 has 4 divisors (see below), whose sum is σ = 3027505056. Its totient is φ = 2270628780.

The previous prime is 2649066899. The next prime is 2649066941. The reversal of 2649066917 is 7196609462.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2649066917 - 2⁶ = 2649066853 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 (2649066817) 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, 189219059 + ... + 189219072.

It is an arithmetic number, because the mean of its divisors is an integer number (756876264).

Almost surely, 2^2649066917 is an apocalyptic number.

It is an amenable number.

2649066917 is a deficient number, since it is larger than the sum of its proper divisors (378438139).

2649066917 is an equidigital number, since it uses as much as digits as its factorization.

2649066917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378438138.

The product of its (nonzero) digits is 979776, while the sum is 50.

The square root of 2649066917 is about 51469.0870037540. The cubic root of 2649066917 is about 1383.6650662233.

The spelling of 2649066917 in words is "two billion, six hundred forty-nine million, sixty-six thousand, nine hundred seventeen".