2040664064 has 26 divisors (see below), whose sum is σ = 4080838110. Its totient is φ = 1020329984.

The previous prime is 2040664057. The next prime is 2040664069. The reversal of 2040664064 is 4604660402.

It can be written as a sum of positive squares in only one way, i.e., 1600000000 + 440664064 = 40000^2 + 20992^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 2040664064.

It is not an unprimeable number, because it can be changed into a prime (2040664069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245009 + ... + 253200.

Almost surely, 2^2040664064 is an apocalyptic number.

It is an amenable number.

2040664064 is a deficient number, since it is larger than the sum of its proper divisors (2040174046).

2040664064 is an frugal number, since it uses more digits than its factorization.

2040664064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498233 (or 498211 counting only the distinct ones).

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

The square root of 2040664064 is about 45173.7098764314. The cubic root of 2040664064 is about 1268.4027420334.

The spelling of 2040664064 in words is "two billion, forty million, six hundred sixty-four thousand, sixty-four".