66010801 has 2 divisors, whose sum is σ = 66010802. Its totient is φ = 66010800.

The previous prime is 66010799. The next prime is 66010817. The reversal of 66010801 is 10801066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61701025 + 4309776 = 7855^2 + 2076^2 .

It is a cyclic number.

It is not a de Polignac number, because 66010801 - 2¹ = 66010799 is a prime.

Together with 66010799, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (66014801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33005400 + 33005401.

It is an arithmetic number, because the mean of its divisors is an integer number (33005401).

Almost surely, 2^66010801 is an apocalyptic number.

It is an amenable number.

66010801 is a deficient number, since it is larger than the sum of its proper divisors (1).

66010801 is an equidigital number, since it uses as much as digits as its factorization.

66010801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 66010801 is about 8124.7031330382. The cubic root of 66010801 is about 404.1460460282.

Adding to 66010801 its reverse (10801066), we get a palindrome (76811867).

The spelling of 66010801 in words is "sixty-six million, ten thousand, eight hundred one".