66620301 has 12 divisors (see below), whose sum is σ = 97636896. Its totient is φ = 40375720.

The previous prime is 66620293. The next prime is 66620317. The reversal of 66620301 is 10302666.

It is not a de Polignac number, because 66620301 - 2³ = 66620293 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66620321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91401 + ... + 92126.

It is an arithmetic number, because the mean of its divisors is an integer number (8136408).

Almost surely, 2^66620301 is an apocalyptic number.

It is an amenable number.

66620301 is a deficient number, since it is larger than the sum of its proper divisors (31016595).

66620301 is a wasteful number, since it uses less digits than its factorization.

66620301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183552 (or 183541 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 66620301 is about 8162.1260098090. The cubic root of 66620301 is about 405.3861094541.

Adding to 66620301 its reverse (10302666), we get a palindrome (76922967).

The spelling of 66620301 in words is "sixty-six million, six hundred twenty thousand, three hundred one".