66797371 has 2 divisors, whose sum is σ = 66797372. Its totient is φ = 66797370.

The previous prime is 66797363. The next prime is 66797413. The reversal of 66797371 is 17379766.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66797371 - 2³ = 66797363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66797671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33398685 + 33398686.

It is an arithmetic number, because the mean of its divisors is an integer number (33398686).

Almost surely, 2^66797371 is an apocalyptic number.

66797371 is a deficient number, since it is larger than the sum of its proper divisors (1).

66797371 is an equidigital number, since it uses as much as digits as its factorization.

66797371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 333396, while the sum is 46.

The square root of 66797371 is about 8172.9658631368. The cubic root of 66797371 is about 405.7449501022.

The spelling of 66797371 in words is "sixty-six million, seven hundred ninety-seven thousand, three hundred seventy-one".