2066688754 has 8 divisors (see below), whose sum is σ = 3338497260. Its totient is φ = 953856336.

The previous prime is 2066688739. The next prime is 2066688769. The reversal of 2066688754 is 4578866602.

It is an interprime number because it is at equal distance from previous prime (2066688739) and next prime (2066688769).

It can be written as a sum of positive squares in 2 ways, for example, as 2022930529 + 43758225 = 44977^2 + 6615^2 .

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

It is an unprimeable number.

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, 39743989 + ... + 39744040.

Almost surely, 2^2066688754 is an apocalyptic number.

2066688754 is a deficient number, since it is larger than the sum of its proper divisors (1271808506).

2066688754 is a wasteful number, since it uses less digits than its factorization.

2066688754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79488044.

The product of its (nonzero) digits is 3870720, while the sum is 52.

The square root of 2066688754 is about 45460.8485842488. The cubic root of 2066688754 is about 1273.7719826015.

The spelling of 2066688754 in words is "two billion, sixty-six million, six hundred eighty-eight thousand, seven hundred fifty-four".