66285929 has 2 divisors, whose sum is σ = 66285930. Its totient is φ = 66285928.

The previous prime is 66285917. The next prime is 66285953. The reversal of 66285929 is 92958266.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63170704 + 3115225 = 7948^2 + 1765^2 .

It is a cyclic number.

It is not a de Polignac number, because 66285929 - 2¹⁶ = 66220393 is a prime.

It is not a weakly prime, because it can be changed into another prime (66287929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33142964 + 33142965.

It is an arithmetic number, because the mean of its divisors is an integer number (33142965).

Almost surely, 2^66285929 is an apocalyptic number.

It is an amenable number.

66285929 is a deficient number, since it is larger than the sum of its proper divisors (1).

66285929 is an equidigital number, since it uses as much as digits as its factorization.

66285929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 466560, while the sum is 47.

The square root of 66285929 is about 8141.6170998150. The cubic root of 66285929 is about 404.7067510875.

The spelling of 66285929 in words is "sixty-six million, two hundred eighty-five thousand, nine hundred twenty-nine".