2558664747 has 16 divisors (see below), whose sum is σ = 4013592480. Its totient is φ = 1605436416.

The previous prime is 2558664683. The next prime is 2558664761. The reversal of 2558664747 is 7474668552.

It is a happy number.

2558664747 is a `hidden beast` number, since 2 + 558 + 6 + 6 + 47 + 47 = 666.

It is not a de Polignac number, because 2558664747 - 2⁶ = 2558664683 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2558664693 and 2558664702.

It is not an unprimeable number, because it can be changed into a prime (2558664547) 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, 2786758 + ... + 2787675.

It is an arithmetic number, because the mean of its divisors is an integer number (250849530).

Almost surely, 2^2558664747 is an apocalyptic number.

2558664747 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2558664747 is a deficient number, since it is larger than the sum of its proper divisors (1454927733).

2558664747 is a wasteful number, since it uses less digits than its factorization.

2558664747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5574459 (or 5574453 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 54.

The square root of 2558664747 is about 50583.2457143667. The cubic root of 2558664747 is about 1367.7428773834.

The spelling of 2558664747 in words is "two billion, five hundred fifty-eight million, six hundred sixty-four thousand, seven hundred forty-seven".