66196903 has 2 divisors, whose sum is σ = 66196904. Its totient is φ = 66196902.

The previous prime is 66196883. The next prime is 66196939. The reversal of 66196903 is 30969166.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66196903 - 2¹³ = 66188711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66196973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33098451 + 33098452.

It is an arithmetic number, because the mean of its divisors is an integer number (33098452).

Almost surely, 2^66196903 is an apocalyptic number.

66196903 is a deficient number, since it is larger than the sum of its proper divisors (1).

66196903 is an equidigital number, since it uses as much as digits as its factorization.

66196903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 66196903 is about 8136.1479214675. The cubic root of 66196903 is about 404.5254880567.

The spelling of 66196903 in words is "sixty-six million, one hundred ninety-six thousand, nine hundred three".