66462443 has 2 divisors, whose sum is σ = 66462444. Its totient is φ = 66462442.

The previous prime is 66462439. The next prime is 66462449. The reversal of 66462443 is 34426466.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66462443 - 2² = 66462439 is a prime.

It is not a weakly prime, because it can be changed into another prime (66462449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33231221 + 33231222.

It is an arithmetic number, because the mean of its divisors is an integer number (33231222).

Almost surely, 2^66462443 is an apocalyptic number.

66462443 is a deficient number, since it is larger than the sum of its proper divisors (1).

66462443 is an equidigital number, since it uses as much as digits as its factorization.

66462443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 35.

The square root of 66462443 is about 8152.4501225092. The cubic root of 66462443 is about 405.0656663325.

The spelling of 66462443 in words is "sixty-six million, four hundred sixty-two thousand, four hundred forty-three".