66448368 has 60 divisors (see below), whose sum is σ = 212532528. Its totient is φ = 18984960.

The previous prime is 66448313. The next prime is 66448409. The reversal of 66448368 is 86384466.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31953 + ... + 33968.

Almost surely, 2^66448368 is an apocalyptic number.

It is an amenable number.

66448368 is an abundant number, since it is smaller than the sum of its proper divisors (146084160).

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

66448368 is a wasteful number, since it uses less digits than its factorization.

66448368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65942 (or 65933 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 66448368 is about 8151.5868393829. The cubic root of 66448368 is about 405.0370702236.

The spelling of 66448368 in words is "sixty-six million, four hundred forty-eight thousand, three hundred sixty-eight".