66525763 has 2 divisors, whose sum is σ = 66525764. Its totient is φ = 66525762.

The previous prime is 66525757. The next prime is 66525827. The reversal of 66525763 is 36752566.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66525763 - 2⁵ = 66525731 is a prime.

It is not a weakly prime, because it can be changed into another prime (66525733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33262881 + 33262882.

It is an arithmetic number, because the mean of its divisors is an integer number (33262882).

Almost surely, 2^66525763 is an apocalyptic number.

66525763 is a deficient number, since it is larger than the sum of its proper divisors (1).

66525763 is an equidigital number, since it uses as much as digits as its factorization.

66525763 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 40.

The square root of 66525763 is about 8156.3326930674. The cubic root of 66525763 is about 405.1942633556.

The spelling of 66525763 in words is "sixty-six million, five hundred twenty-five thousand, seven hundred sixty-three".