66852099 has 24 divisors (see below), whose sum is σ = 103233312. Its totient is φ = 41585280.

The previous prime is 66852077. The next prime is 66852103. The reversal of 66852099 is 99025866.

66852099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66852099 - 2¹⁶ = 66786563 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (66852029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4549 + ... + 12425.

It is an arithmetic number, because the mean of its divisors is an integer number (4301388).

Almost surely, 2^66852099 is an apocalyptic number.

66852099 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

66852099 is a deficient number, since it is larger than the sum of its proper divisors (36381213).

66852099 is a wasteful number, since it uses less digits than its factorization.

66852099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7947 (or 7944 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 66852099 is about 8176.3132890075. The cubic root of 66852099 is about 405.8557306494.

It can be divided in two parts, 66 and 852099, that added together give a triangular number (852165 = T₁₃₀₅).

The spelling of 66852099 in words is "sixty-six million, eight hundred fifty-two thousand, ninety-nine".