66002755 has 96 divisors (see below), whose sum is σ = 111694464. Its totient is φ = 36900864.

The previous prime is 66002707. The next prime is 66002759. The reversal of 66002755 is 55720066.

It is not a de Polignac number, because 66002755 - 2⁹ = 66002243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66002759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1245309 + ... + 1245361.

It is an arithmetic number, because the mean of its divisors is an integer number (1163484).

Almost surely, 2^66002755 is an apocalyptic number.

66002755 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

66002755 is a deficient number, since it is larger than the sum of its proper divisors (45691709).

66002755 is a wasteful number, since it uses less digits than its factorization.

66002755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 66002755 is about 8124.2079613954. The cubic root of 66002755 is about 404.1296250225.

The spelling of 66002755 in words is "sixty-six million, two thousand, seven hundred fifty-five".