66158476 has 12 divisors (see below), whose sum is σ = 115834320. Its totient is φ = 33062960.

The previous prime is 66158459. The next prime is 66158507. The reversal of 66158476 is 67485166.

It is a happy 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 3 ways as a sum of consecutive naturals, for example, 13530 + ... + 17758.

It is an arithmetic number, because the mean of its divisors is an integer number (9652860).

Almost surely, 2^66158476 is an apocalyptic number.

It is an amenable number.

66158476 is a deficient number, since it is larger than the sum of its proper divisors (49675844).

66158476 is a wasteful number, since it uses less digits than its factorization.

66158476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8144 (or 8142 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The square root of 66158476 is about 8133.7860802950. The cubic root of 66158476 is about 404.4471978394.

The spelling of 66158476 in words is "sixty-six million, one hundred fifty-eight thousand, four hundred seventy-six".