66454952 has 16 divisors (see below), whose sum is σ = 127501440. Its totient is φ = 32454576.

The previous prime is 66454943. The next prime is 66454963. The reversal of 66454952 is 25945466.

It is a happy number.

66454952 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96248 + ... + 96935.

It is an arithmetic number, because the mean of its divisors is an integer number (7968840).

Almost surely, 2^66454952 is an apocalyptic number.

It is an amenable number.

66454952 is a deficient number, since it is larger than the sum of its proper divisors (61046488).

66454952 is a wasteful number, since it uses less digits than its factorization.

66454952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193232 (or 193228 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 66454952 is about 8151.9906771291. The cubic root of 66454952 is about 405.0504474069.

The spelling of 66454952 in words is "sixty-six million, four hundred fifty-four thousand, nine hundred fifty-two".