2564645762 has 16 divisors (see below), whose sum is σ = 4398321600. Its totient is φ = 1098687408.

The previous prime is 2564645761. The next prime is 2564645869. The reversal of 2564645762 is 2675464652.

It is not an unprimeable number, because it can be changed into a prime (2564645761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248 + ... + 71619.

It is an arithmetic number, because the mean of its divisors is an integer number (274895100).

Almost surely, 2^2564645762 is an apocalyptic number.

2564645762 is a deficient number, since it is larger than the sum of its proper divisors (1833675838).

2564645762 is a wasteful number, since it uses less digits than its factorization.

2564645762 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74425.

The product of its digits is 2419200, while the sum is 47.

The square root of 2564645762 is about 50642.3317196197. The cubic root of 2564645762 is about 1368.8077719838.

The spelling of 2564645762 in words is "two billion, five hundred sixty-four million, six hundred forty-five thousand, seven hundred sixty-two".