66773436 has 12 divisors (see below), whose sum is σ = 155804712. Its totient is φ = 22257808.

The previous prime is 66773401. The next prime is 66773449. The reversal of 66773436 is 63437766.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent 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, 2782215 + ... + 2782238.

It is an arithmetic number, because the mean of its divisors is an integer number (12983726).

Almost surely, 2^66773436 is an apocalyptic number.

It is an amenable number.

66773436 is an abundant number, since it is smaller than the sum of its proper divisors (89031276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66773436 is a wasteful number, since it uses less digits than its factorization.

66773436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5564460 (or 5564458 counting only the distinct ones).

The product of its digits is 381024, while the sum is 42.

The square root of 66773436 is about 8171.5014532214. The cubic root of 66773436 is about 405.6964817997.

The spelling of 66773436 in words is "sixty-six million, seven hundred seventy-three thousand, four hundred thirty-six".