2660545394 has 8 divisors (see below), whose sum is σ = 4297804140. Its totient is φ = 1227944016.

The previous prime is 2660545313. The next prime is 2660545397. The reversal of 2660545394 is 4935450662.

It can be written as a sum of positive squares in 2 ways, for example, as 2570997025 + 89548369 = 50705^2 + 9463^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2660545397) 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 3 ways as a sum of consecutive naturals, for example, 51164309 + ... + 51164360.

Almost surely, 2^2660545394 is an apocalyptic number.

2660545394 is a deficient number, since it is larger than the sum of its proper divisors (1637258746).

2660545394 is a wasteful number, since it uses less digits than its factorization.

2660545394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102328684.

The product of its (nonzero) digits is 777600, while the sum is 44.

The square root of 2660545394 is about 51580.4749299578. The cubic root of 2660545394 is about 1385.6606724279.

The spelling of 2660545394 in words is "two billion, six hundred sixty million, five hundred forty-five thousand, three hundred ninety-four".