2644321604 has 12 divisors (see below), whose sum is σ = 4634900928. Its totient is φ = 1320064200.

The previous prime is 2644321601. The next prime is 2644321613. The reversal of 2644321604 is 4061234462.

It is a super-2 number, since 2×2644321604² = 13984873490762265632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2644321601) 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, 521312 + ... + 526359.

It is an arithmetic number, because the mean of its divisors is an integer number (386241744).

Almost surely, 2^2644321604 is an apocalyptic number.

It is an amenable number.

2644321604 is a deficient number, since it is larger than the sum of its proper divisors (1990579324).

2644321604 is a wasteful number, since it uses less digits than its factorization.

2644321604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048306 (or 1048304 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 2644321604 is about 51422.9676700985. The cubic root of 2644321604 is about 1382.8383791313.

The spelling of 2644321604 in words is "two billion, six hundred forty-four million, three hundred twenty-one thousand, six hundred four".