66050420 has 24 divisors (see below), whose sum is σ = 139630848. Its totient is φ = 26244000.

The previous prime is 66050407. The next prime is 66050431. The reversal of 66050420 is 2405066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7916 + ... + 13955.

It is an arithmetic number, because the mean of its divisors is an integer number (5817952).

Almost surely, 2^66050420 is an apocalyptic number.

It is an amenable number.

66050420 is an abundant number, since it is smaller than the sum of its proper divisors (73580428).

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

66050420 is a wasteful number, since it uses less digits than its factorization.

66050420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22031 (or 22029 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 66050420 is about 8127.1409486978. The cubic root of 66050420 is about 404.2268846164.

Adding to 66050420 its reverse (2405066), we get a palindrome (68455486).

The spelling of 66050420 in words is "sixty-six million, fifty thousand, four hundred twenty".