2564542674 has 32 divisors (see below), whose sum is σ = 5895504000. Its totient is φ = 825369552.

The previous prime is 2564542657. The next prime is 2564542679. The reversal of 2564542674 is 4762454652.

2564542674 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2564542679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 817254 + ... + 820385.

It is an arithmetic number, because the mean of its divisors is an integer number (184234500).

Almost surely, 2^2564542674 is an apocalyptic number.

2564542674 is an abundant number, since it is smaller than the sum of its proper divisors (3330961326).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2564542674 is a wasteful number, since it uses less digits than its factorization.

2564542674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1637679 (or 1637673 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 45.

The square root of 2564542674 is about 50641.3139047557. The cubic root of 2564542674 is about 1368.7894316281.

The spelling of 2564542674 in words is "two billion, five hundred sixty-four million, five hundred forty-two thousand, six hundred seventy-four".