66455356 has 24 divisors (see below), whose sum is σ = 131246640. Its totient is φ = 29164800.

The previous prime is 66455309. The next prime is 66455359. The reversal of 66455356 is 65355466.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66455359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24765 + ... + 27316.

It is an arithmetic number, because the mean of its divisors is an integer number (5468610).

Almost surely, 2^66455356 is an apocalyptic number.

It is an amenable number.

66455356 is a deficient number, since it is larger than the sum of its proper divisors (64791284).

66455356 is a wasteful number, since it uses less digits than its factorization.

66455356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52125 (or 52123 counting only the distinct ones).

The product of its digits is 324000, while the sum is 40.

The square root of 66455356 is about 8152.0154563151. The cubic root of 66455356 is about 405.0512682138.

The spelling of 66455356 in words is "sixty-six million, four hundred fifty-five thousand, three hundred fifty-six".