66552118 has 12 divisors (see below), whose sum is σ = 101655540. Its totient is φ = 32668500.

The previous prime is 66552113. The next prime is 66552121. The reversal of 66552118 is 81125566.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66552113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 88243 + ... + 88993.

It is an arithmetic number, because the mean of its divisors is an integer number (8471295).

Almost surely, 2^66552118 is an apocalyptic number.

66552118 is a deficient number, since it is larger than the sum of its proper divisors (35103422).

66552118 is an frugal number, since it uses more digits than its factorization.

66552118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563 (or 812 counting only the distinct ones).

The product of its digits is 14400, while the sum is 34.

The square root of 66552118 is about 8157.9481488914. The cubic root of 66552118 is about 405.2477638565.

The spelling of 66552118 in words is "sixty-six million, five hundred fifty-two thousand, one hundred eighteen".