2664646375 has 16 divisors (see below), whose sum is σ = 3406594464. Its totient is φ = 2079720000.

The previous prime is 2664646339. The next prime is 2664646409. The reversal of 2664646375 is 5736464662.

It is a happy number.

It is not a de Polignac number, because 2664646375 - 2¹⁵ = 2664613607 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 254841 + ... + 265090.

It is an arithmetic number, because the mean of its divisors is an integer number (212912154).

Almost surely, 2^2664646375 is an apocalyptic number.

2664646375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2664646375 is a deficient number, since it is larger than the sum of its proper divisors (741948089).

2664646375 is an equidigital number, since it uses as much as digits as its factorization.

2664646375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519987 (or 519977 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 49.

The square root of 2664646375 is about 51620.2128531063. The cubic root of 2664646375 is about 1386.3722622251.

The spelling of 2664646375 in words is "two billion, six hundred sixty-four million, six hundred forty-six thousand, three hundred seventy-five".