2665371747 has 18 divisors (see below), whose sum is σ = 3647639244. Its totient is φ = 1731190560.

The previous prime is 2665371679. The next prime is 2665371773. The reversal of 2665371747 is 7471735662.

It is not a de Polignac number, because 2665371747 - 2²⁸ = 2396936291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2665371696 and 2665371705.

It is not an unprimeable number, because it can be changed into a prime (2665371047) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3665898 + ... + 3666624.

Almost surely, 2^2665371747 is an apocalyptic number.

2665371747 is a deficient number, since it is larger than the sum of its proper divisors (982267497).

2665371747 is an frugal number, since it uses more digits than its factorization.

2665371747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539 (or 771 counting only the distinct ones).

The product of its digits is 1481760, while the sum is 48.

The square root of 2665371747 is about 51627.2384212055. The cubic root of 2665371747 is about 1386.4980505714.

Multiplying 2665371747 by its sum of digits (48), we get a square (127937843856 = 357684²).

The spelling of 2665371747 in words is "two billion, six hundred sixty-five million, three hundred seventy-one thousand, seven hundred forty-seven".