2665637748 has 60 divisors (see below), whose sum is σ = 6975756480. Its totient is φ = 887621328.

The previous prime is 2665637729. The next prime is 2665637773. The reversal of 2665637748 is 8477365662.

2665637748 is a `hidden beast` number, since 2 + 6 + 6 + 563 + 7 + 74 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 2665637694 and 2665637703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 353643 + ... + 361101.

It is an arithmetic number, because the mean of its divisors is an integer number (116262608).

Almost surely, 2^2665637748 is an apocalyptic number.

It is an amenable number.

2665637748 is an abundant number, since it is smaller than the sum of its proper divisors (4310118732).

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

2665637748 is a wasteful number, since it uses less digits than its factorization.

2665637748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8578 (or 8567 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 54.

The square root of 2665637748 is about 51629.8145261050. The cubic root of 2665637748 is about 1386.5441726680.

The spelling of 2665637748 in words is "two billion, six hundred sixty-five million, six hundred thirty-seven thousand, seven hundred forty-eight".