66202530 has 32 divisors (see below), whose sum is σ = 161129088. Its totient is φ = 17404800.

The previous prime is 66202511. The next prime is 66202537. The reversal of 66202530 is 3520266.

It is a self number, because there is not a number n which added to its sum of digits gives 66202530.

It is not an unprimeable number, because it can be changed into a prime (66202537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13411 + ... + 17670.

It is an arithmetic number, because the mean of its divisors is an integer number (5035284).

Almost surely, 2^66202530 is an apocalyptic number.

66202530 is an abundant number, since it is smaller than the sum of its proper divisors (94926558).

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

66202530 is a wasteful number, since it uses less digits than its factorization.

66202530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31162.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 66202530 is about 8136.4937165833. The cubic root of 66202530 is about 404.5369498237.

Adding to 66202530 its reverse (3520266), we get a palindrome (69722796).

The spelling of 66202530 in words is "sixty-six million, two hundred two thousand, five hundred thirty".