66752701 has 2 divisors, whose sum is σ = 66752702. Its totient is φ = 66752700.

The previous prime is 66752689. The next prime is 66752713. The reversal of 66752701 is 10725766.

It is a balanced prime because it is at equal distance from previous prime (66752689) and next prime (66752713).

It can be written as a sum of positive squares in only one way, i.e., 54007801 + 12744900 = 7349^2 + 3570^2 .

It is a cyclic number.

It is not a de Polignac number, because 66752701 - 2⁵ = 66752669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66752731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33376350 + 33376351.

It is an arithmetic number, because the mean of its divisors is an integer number (33376351).

Almost surely, 2^66752701 is an apocalyptic number.

It is an amenable number.

66752701 is a deficient number, since it is larger than the sum of its proper divisors (1).

66752701 is an equidigital number, since it uses as much as digits as its factorization.

66752701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 66752701 is about 8170.2326160275. The cubic root of 66752701 is about 405.6544841235.

The spelling of 66752701 in words is "sixty-six million, seven hundred fifty-two thousand, seven hundred one".