66448701 has 32 divisors (see below), whose sum is σ = 107971200. Its totient is φ = 40055040.

The previous prime is 66448693. The next prime is 66448727. The reversal of 66448701 is 10784466.

66448701 is a `hidden beast` number, since 6 + 644 + 8 + 7 + 0 + 1 = 666.

It is not a de Polignac number, because 66448701 - 2³ = 66448693 is a prime.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66448751) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 67525 + ... + 68501.

It is an arithmetic number, because the mean of its divisors is an integer number (3374100).

Almost surely, 2^66448701 is an apocalyptic number.

It is an amenable number.

66448701 is a deficient number, since it is larger than the sum of its proper divisors (41522499).

66448701 is a wasteful number, since it uses less digits than its factorization.

66448701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226 (or 1220 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 66448701 is about 8151.6072648282. The cubic root of 66448701 is about 405.0377468247.

The spelling of 66448701 in words is "sixty-six million, four hundred forty-eight thousand, seven hundred one".