66250755 has 12 divisors (see below), whose sum is σ = 114834720. Its totient is φ = 35333712.

The previous prime is 66250753. The next prime is 66250801. The reversal of 66250755 is 55705266.

66250755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66250755 - 2¹ = 66250753 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (66250753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 736075 + ... + 736164.

It is an arithmetic number, because the mean of its divisors is an integer number (9569560).

Almost surely, 2^66250755 is an apocalyptic number.

66250755 is a deficient number, since it is larger than the sum of its proper divisors (48583965).

66250755 is a wasteful number, since it uses less digits than its factorization.

66250755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1472250 (or 1472247 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 66250755 is about 8139.4566771990. The cubic root of 66250755 is about 404.6351538213.

The spelling of 66250755 in words is "sixty-six million, two hundred fifty thousand, seven hundred fifty-five".