66692029 has 2 divisors, whose sum is σ = 66692030. Its totient is φ = 66692028.

The previous prime is 66692023. The next prime is 66692053. The reversal of 66692029 is 92029666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59320804 + 7371225 = 7702^2 + 2715^2 .

It is a cyclic number.

It is not a de Polignac number, because 66692029 - 2⁹ = 66691517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66691982 and 66692000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66692023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33346014 + 33346015.

It is an arithmetic number, because the mean of its divisors is an integer number (33346015).

Almost surely, 2^66692029 is an apocalyptic number.

It is an amenable number.

66692029 is a deficient number, since it is larger than the sum of its proper divisors (1).

66692029 is an equidigital number, since it uses as much as digits as its factorization.

66692029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 40.

The square root of 66692029 is about 8166.5187809739. The cubic root of 66692029 is about 405.5315461305.

The spelling of 66692029 in words is "sixty-six million, six hundred ninety-two thousand, twenty-nine".