66519136 has 12 divisors (see below), whose sum is σ = 130959612. Its totient is φ = 33259552.

The previous prime is 66519121. The next prime is 66519143. The reversal of 66519136 is 63191566.

It is a junction number, because it is equal to n+sod(n) for n = 66519095 and 66519104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1039330 + ... + 1039393.

It is an arithmetic number, because the mean of its divisors is an integer number (10913301).

Almost surely, 2^66519136 is an apocalyptic number.

It is an amenable number.

66519136 is a deficient number, since it is larger than the sum of its proper divisors (64440476).

66519136 is a wasteful number, since it uses less digits than its factorization.

66519136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078733 (or 2078725 counting only the distinct ones).

The product of its digits is 29160, while the sum is 37.

The square root of 66519136 is about 8155.9264341950. The cubic root of 66519136 is about 405.1808083599.

The spelling of 66519136 in words is "sixty-six million, five hundred nineteen thousand, one hundred thirty-six".