66648236 has 12 divisors (see below), whose sum is σ = 116820312. Its totient is φ = 33271008.

The previous prime is 66648223. The next prime is 66648251. The reversal of 66648236 is 63284666.

It is a junction number, because it is equal to n+sod(n) for n = 66648193 and 66648202.

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, 10385 + ... + 15528.

It is an arithmetic number, because the mean of its divisors is an integer number (9735026).

Almost surely, 2^66648236 is an apocalyptic number.

It is an amenable number.

66648236 is a deficient number, since it is larger than the sum of its proper divisors (50172076).

66648236 is a wasteful number, since it uses less digits than its factorization.

66648236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26560 (or 26558 counting only the distinct ones).

The product of its digits is 248832, while the sum is 41.

The square root of 66648236 is about 8163.8370880365. The cubic root of 66648236 is about 405.4427632484.

The spelling of 66648236 in words is "sixty-six million, six hundred forty-eight thousand, two hundred thirty-six".