66030751 has 2 divisors, whose sum is σ = 66030752. Its totient is φ = 66030750.

The previous prime is 66030749. The next prime is 66030761. The reversal of 66030751 is 15703066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66030751 - 2¹ = 66030749 is a prime.

Together with 66030749, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66030721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33015375 + 33015376.

It is an arithmetic number, because the mean of its divisors is an integer number (33015376).

Almost surely, 2^66030751 is an apocalyptic number.

66030751 is a deficient number, since it is larger than the sum of its proper divisors (1).

66030751 is an equidigital number, since it uses as much as digits as its factorization.

66030751 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 66030751 is about 8125.9307774556. The cubic root of 66030751 is about 404.1867560402.

The spelling of 66030751 in words is "sixty-six million, thirty thousand, seven hundred fifty-one".