66916203 has 8 divisors (see below), whose sum is σ = 91120128. Its totient is φ = 43661544.

The previous prime is 66916189. The next prime is 66916231. The reversal of 66916203 is 30261966.

It is a happy number.

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

It is not a de Polignac number, because 66916203 - 2⁶ = 66916139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66916273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237151 + ... + 237432.

It is an arithmetic number, because the mean of its divisors is an integer number (11390016).

Almost surely, 2^66916203 is an apocalyptic number.

66916203 is a deficient number, since it is larger than the sum of its proper divisors (24203925).

66916203 is a wasteful number, since it uses less digits than its factorization.

66916203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474633.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 66916203 is about 8180.2324539099. The cubic root of 66916203 is about 405.9854132609.

The spelling of 66916203 in words is "sixty-six million, nine hundred sixteen thousand, two hundred three".