66553012 has 12 divisors (see below), whose sum is σ = 116991616. Its totient is φ = 33126840.

The previous prime is 66552989. The next prime is 66553027. The reversal of 66553012 is 21035566.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36414 + ... + 38197.

Almost surely, 2^66553012 is an apocalyptic number.

It is an amenable number.

66553012 is a deficient number, since it is larger than the sum of its proper divisors (50438604).

66553012 is a wasteful number, since it uses less digits than its factorization.

66553012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74838 (or 74836 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 66553012 is about 8158.0029418970. The cubic root of 66553012 is about 405.2495784237.

Adding to 66553012 its reverse (21035566), we get a palindrome (87588578).

The spelling of 66553012 in words is "sixty-six million, five hundred fifty-three thousand, twelve".