66203020 has 24 divisors (see below), whose sum is σ = 149721264. Its totient is φ = 24444096.

The previous prime is 66203017. The next prime is 66203021. The reversal of 66203020 is 2030266.

It is not an unprimeable number, because it can be changed into a prime (66203021) 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, 127054 + ... + 127573.

It is an arithmetic number, because the mean of its divisors is an integer number (6238386).

Almost surely, 2^66203020 is an apocalyptic number.

It is an amenable number.

66203020 is an abundant number, since it is smaller than the sum of its proper divisors (83518244).

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

66203020 is a wasteful number, since it uses less digits than its factorization.

66203020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254649 (or 254647 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 66203020 is about 8136.5238277781. The cubic root of 66203020 is about 404.5379478853.

Adding to 66203020 its reverse (2030266), we get a palindrome (68233286).

It can be divided in two parts, 6 and 6203020, that added together give a palindrome (6203026).

The spelling of 66203020 in words is "sixty-six million, two hundred three thousand, twenty".