66242600 has 24 divisors (see below), whose sum is σ = 154014510. Its totient is φ = 26496960.

The previous prime is 66242597. The next prime is 66242669. The reversal of 66242600 is 624266.

It can be written as a sum of positive squares in 3 ways, for example, as 36409156 + 29833444 = 6034^2 + 5462^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 66242600.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 165407 + ... + 165806.

Almost surely, 2^66242600 is an apocalyptic number.

It is an amenable number.

66242600 is an abundant number, since it is smaller than the sum of its proper divisors (87771910).

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

66242600 is a wasteful number, since it uses less digits than its factorization.

66242600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331229 (or 331220 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 66242600 is about 8138.9557069688. The cubic root of 66242600 is about 404.6185505635.

Adding to 66242600 its reverse (624266), we get a palindrome (66866866).

The spelling of 66242600 in words is "sixty-six million, two hundred forty-two thousand, six hundred".