66629097 has 6 divisors (see below), whose sum is σ = 96242042. Its totient is φ = 44419392.

The previous prime is 66629081. The next prime is 66629099. The reversal of 66629097 is 79092666.

It can be written as a sum of positive squares in only one way, i.e., 45643536 + 20985561 = 6756^2 + 4581^2 .

It is not a de Polignac number, because 66629097 - 2⁴ = 66629081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66629099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3701608 + ... + 3701625.

Almost surely, 2^66629097 is an apocalyptic number.

It is an amenable number.

66629097 is a deficient number, since it is larger than the sum of its proper divisors (29612945).

66629097 is a wasteful number, since it uses less digits than its factorization.

66629097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7403239 (or 7403236 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 66629097 is about 8162.6648222256. The cubic root of 66629097 is about 405.4039499584.

The spelling of 66629097 in words is "sixty-six million, six hundred twenty-nine thousand, ninety-seven".