66869536 has 12 divisors (see below), whose sum is σ = 131649462. Its totient is φ = 33434752.

The previous prime is 66869519. The next prime is 66869549. The reversal of 66869536 is 63596866.

66869536 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., 63043600 + 3825936 = 7940^2 + 1956^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66869536.

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, 1044805 + ... + 1044868.

Almost surely, 2^66869536 is an apocalyptic number.

It is an amenable number.

66869536 is a deficient number, since it is larger than the sum of its proper divisors (64779926).

66869536 is a wasteful number, since it uses less digits than its factorization.

66869536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2089683 (or 2089675 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 49.

The square root of 66869536 is about 8177.3795313658. The cubic root of 66869536 is about 405.8910139653.

The spelling of 66869536 in words is "sixty-six million, eight hundred sixty-nine thousand, five hundred thirty-six".