66140576 has 12 divisors (see below), whose sum is σ = 130214322. Its totient is φ = 33070272.

The previous prime is 66140563. The next prime is 66140587. The reversal of 66140576 is 67504166.

66140576 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 43824400 + 22316176 = 6620^2 + 4724^2 .

It is a super-2 number, since 2×66140576² = 8749151587223552, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 1033415 + ... + 1033478.

Almost surely, 2^66140576 is an apocalyptic number.

It is an amenable number.

66140576 is a deficient number, since it is larger than the sum of its proper divisors (64073746).

66140576 is a wasteful number, since it uses less digits than its factorization.

66140576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066903 (or 2066895 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 66140576 is about 8132.6856572721. The cubic root of 66140576 is about 404.4107184730.

The spelling of 66140576 in words is "sixty-six million, one hundred forty thousand, five hundred seventy-six".