66836701 has 2 divisors, whose sum is σ = 66836702. Its totient is φ = 66836700.

The previous prime is 66836681. The next prime is 66836807. The reversal of 66836701 is 10763866.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44756100 + 22080601 = 6690^2 + 4699^2 .

It is a cyclic number.

It is not a de Polignac number, because 66836701 - 2⁵ = 66836669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66836501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33418350 + 33418351.

It is an arithmetic number, because the mean of its divisors is an integer number (33418351).

Almost surely, 2^66836701 is an apocalyptic number.

It is an amenable number.

66836701 is a deficient number, since it is larger than the sum of its proper divisors (1).

66836701 is an equidigital number, since it uses as much as digits as its factorization.

66836701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 66836701 is about 8175.3716123489. The cubic root of 66836701 is about 405.8245680956.

The spelling of 66836701 in words is "sixty-six million, eight hundred thirty-six thousand, seven hundred one".