2660440623 has 8 divisors (see below), whose sum is σ = 3600198528. Its totient is φ = 1747154904.

The previous prime is 2660440597. The next prime is 2660440633. The reversal of 2660440623 is 3260440662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2660440623 - 2¹⁷ = 2660309551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660440633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6617811 + ... + 6618212.

It is an arithmetic number, because the mean of its divisors is an integer number (450024816).

Almost surely, 2^2660440623 is an apocalyptic number.

2660440623 is a deficient number, since it is larger than the sum of its proper divisors (939757905).

2660440623 is a wasteful number, since it uses less digits than its factorization.

2660440623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13236093.

The product of its (nonzero) digits is 41472, while the sum is 33.

The square root of 2660440623 is about 51579.4593127923. The cubic root of 2660440623 is about 1385.6424833051.

The spelling of 2660440623 in words is "two billion, six hundred sixty million, four hundred forty thousand, six hundred twenty-three".