2664644624 has 20 divisors (see below), whose sum is σ = 5167703100. Its totient is φ = 1331043840.

The previous prime is 2664644621. The next prime is 2664644659. The reversal of 2664644624 is 4264464662.

It can be written as a sum of positive squares in 2 ways, for example, as 1255993600 + 1408651024 = 35440^2 + 37532^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2664644621) 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, 62597 + ... + 96164.

It is an arithmetic number, because the mean of its divisors is an integer number (258385155).

Almost surely, 2^2664644624 is an apocalyptic number.

It is an amenable number.

2664644624 is a deficient number, since it is larger than the sum of its proper divisors (2503058476).

2664644624 is a wasteful number, since it uses less digits than its factorization.

2664644624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159818 (or 159812 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 44.

The square root of 2664644624 is about 51620.1958926930. The cubic root of 2664644624 is about 1386.3719585528.

The spelling of 2664644624 in words is "two billion, six hundred sixty-four million, six hundred forty-four thousand, six hundred twenty-four".