66402353 has 2 divisors, whose sum is σ = 66402354. Its totient is φ = 66402352.

The previous prime is 66402337. The next prime is 66402367. The reversal of 66402353 is 35320466.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55696369 + 10705984 = 7463^2 + 3272^2 .

It is a cyclic number.

It is not a de Polignac number, because 66402353 - 2⁴ = 66402337 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (66402053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33201176 + 33201177.

It is an arithmetic number, because the mean of its divisors is an integer number (33201177).

Almost surely, 2^66402353 is an apocalyptic number.

It is an amenable number.

66402353 is a deficient number, since it is larger than the sum of its proper divisors (1).

66402353 is an equidigital number, since it uses as much as digits as its factorization.

66402353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 66402353 is about 8148.7638939903. The cubic root of 66402353 is about 404.9435535822.

The spelling of 66402353 in words is "sixty-six million, four hundred two thousand, three hundred fifty-three".