2665326747 has 4 divisors (see below), whose sum is σ = 3553769000. Its totient is φ = 1776884496.

The previous prime is 2665326743. The next prime is 2665326757. The reversal of 2665326747 is 7476235662.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2665326747 - 2² = 2665326743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2665326696 and 2665326705.

It is not an unprimeable number, because it can be changed into a prime (2665326743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444221122 + ... + 444221127.

It is an arithmetic number, because the mean of its divisors is an integer number (888442250).

Almost surely, 2^2665326747 is an apocalyptic number.

2665326747 is a deficient number, since it is larger than the sum of its proper divisors (888442253).

2665326747 is an equidigital number, since it uses as much as digits as its factorization.

2665326747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888442252.

The product of its digits is 2540160, while the sum is 48.

The square root of 2665326747 is about 51626.8026029116. The cubic root of 2665326747 is about 1386.4902476869.

The spelling of 2665326747 in words is "two billion, six hundred sixty-five million, three hundred twenty-six thousand, seven hundred forty-seven".