66248408 has 32 divisors (see below), whose sum is σ = 126340560. Its totient is φ = 32563200.

The previous prime is 66248401. The next prime is 66248431. The reversal of 66248408 is 80484266.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66248401) 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 7 ways as a sum of consecutive naturals, for example, 165008 + ... + 165408.

Almost surely, 2^66248408 is an apocalyptic number.

It is an amenable number.

66248408 is a deficient number, since it is larger than the sum of its proper divisors (60092152).

66248408 is a wasteful number, since it uses less digits than its factorization.

66248408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 38.

The square root of 66248408 is about 8139.3125016797. The cubic root of 66248408 is about 404.6303755616.

The spelling of 66248408 in words is "sixty-six million, two hundred forty-eight thousand, four hundred eight".