66963055 has 16 divisors (see below), whose sum is σ = 82101888. Its totient is φ = 52416000.

The previous prime is 66963047. The next prime is 66963067. The reversal of 66963055 is 55036966.

It is not a de Polignac number, because 66963055 - 2³ = 66963047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66962999 and 66963017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73050 + ... + 73960.

It is an arithmetic number, because the mean of its divisors is an integer number (5131368).

Almost surely, 2^66963055 is an apocalyptic number.

66963055 is a deficient number, since it is larger than the sum of its proper divisors (15138833).

66963055 is a wasteful number, since it uses less digits than its factorization.

66963055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218.

The product of its (nonzero) digits is 145800, while the sum is 40.

The square root of 66963055 is about 8183.0956856192. The cubic root of 66963055 is about 406.0801426397.

The spelling of 66963055 in words is "sixty-six million, nine hundred sixty-three thousand, fifty-five".