66488896 has 28 divisors (see below), whose sum is σ = 132496560. Its totient is φ = 33104000.

The previous prime is 66488881. The next prime is 66488897. The reversal of 66488896 is 69888466.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (66488897) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13995 + ... + 18133.

It is an arithmetic number, because the mean of its divisors is an integer number (4732020).

Almost surely, 2^66488896 is an apocalyptic number.

It is an amenable number.

66488896 is a deficient number, since it is larger than the sum of its proper divisors (66007664).

66488896 is a wasteful number, since it uses less digits than its factorization.

66488896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4402 (or 4392 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 55.

The square root of 66488896 is about 8154.0723568043. The cubic root of 66488896 is about 405.1193998412.

The spelling of 66488896 in words is "sixty-six million, four hundred eighty-eight thousand, eight hundred ninety-six".