66906848 has 24 divisors (see below), whose sum is σ = 132895728. Its totient is φ = 33155584.

The previous prime is 66906821. The next prime is 66906859. The reversal of 66906848 is 84860966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5636 + ... + 12867.

It is an arithmetic number, because the mean of its divisors is an integer number (5537322).

Almost surely, 2^66906848 is an apocalyptic number.

It is an amenable number.

66906848 is a deficient number, since it is larger than the sum of its proper divisors (65988880).

66906848 is a wasteful number, since it uses less digits than its factorization.

66906848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18626 (or 18618 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The square root of 66906848 is about 8179.6606286569. The cubic root of 66906848 is about 405.9664932268.

The spelling of 66906848 in words is "sixty-six million, nine hundred six thousand, eight hundred forty-eight".