2649593966 has 16 divisors (see below), whose sum is σ = 4187408400. Its totient is φ = 1253919168.

The previous prime is 2649593957. The next prime is 2649593971. The reversal of 2649593966 is 6693959462.

It is a super-4 number, since 4×2649593966⁴ (a number of 39 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10706 + ... + 73578.

It is an arithmetic number, because the mean of its divisors is an integer number (261713025).

Almost surely, 2^2649593966 is an apocalyptic number.

2649593966 is a deficient number, since it is larger than the sum of its proper divisors (1537814434).

2649593966 is a wasteful number, since it uses less digits than its factorization.

2649593966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64003.

The product of its digits is 18895680, while the sum is 59.

The square root of 2649593966 is about 51474.2068030193. The cubic root of 2649593966 is about 1383.7568231770.

The spelling of 2649593966 in words is "two billion, six hundred forty-nine million, five hundred ninety-three thousand, nine hundred sixty-six".