66049648 has 30 divisors (see below), whose sum is σ = 148866216. Its totient is φ = 28306656.

The previous prime is 66049639. The next prime is 66049651. The reversal of 66049648 is 84694066.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 41340 + ... + 42907.

Almost surely, 2^66049648 is an apocalyptic number.

It is an amenable number.

66049648 is an abundant number, since it is smaller than the sum of its proper divisors (82816568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66049648 is a wasteful number, since it uses less digits than its factorization.

66049648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84269 (or 84256 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 66049648 is about 8127.0934533817. The cubic root of 66049648 is about 404.2253097368.

The spelling of 66049648 in words is "sixty-six million, forty-nine thousand, six hundred forty-eight".