66742703 has 2 divisors, whose sum is σ = 66742704. Its totient is φ = 66742702.

The previous prime is 66742699. The next prime is 66742727. The reversal of 66742703 is 30724766.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66742703 - 2² = 66742699 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66742733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33371351 + 33371352.

It is an arithmetic number, because the mean of its divisors is an integer number (33371352).

Almost surely, 2^66742703 is an apocalyptic number.

66742703 is a deficient number, since it is larger than the sum of its proper divisors (1).

66742703 is an equidigital number, since it uses as much as digits as its factorization.

66742703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 35.

The square root of 66742703 is about 8169.6207378311. The cubic root of 66742703 is about 405.6342305808.

The spelling of 66742703 in words is "sixty-six million, seven hundred forty-two thousand, seven hundred three".