66652351 has 2 divisors, whose sum is σ = 66652352. Its totient is φ = 66652350.

The previous prime is 66652343. The next prime is 66652447. The reversal of 66652351 is 15325666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66652351 - 2³ = 66652343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66652951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33326175 + 33326176.

It is an arithmetic number, because the mean of its divisors is an integer number (33326176).

Almost surely, 2^66652351 is an apocalyptic number.

66652351 is a deficient number, since it is larger than the sum of its proper divisors (1).

66652351 is an equidigital number, since it uses as much as digits as its factorization.

66652351 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 34.

The square root of 66652351 is about 8164.0891102437. The cubic root of 66652351 is about 405.4511073684.

The spelling of 66652351 in words is "sixty-six million, six hundred fifty-two thousand, three hundred fifty-one".