65042220 has 48 divisors (see below), whose sum is σ = 182488320. Its totient is φ = 17309376.

The previous prime is 65042213. The next prime is 65042231. The reversal of 65042220 is 2224056.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43851 + ... + 45309.

It is an arithmetic number, because the mean of its divisors is an integer number (3801840).

Almost surely, 2^65042220 is an apocalyptic number.

65042220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

65042220 is an abundant number, since it is smaller than the sum of its proper divisors (117446100).

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

65042220 is a wasteful number, since it uses less digits than its factorization.

65042220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2214 (or 2212 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 65042220 is about 8064.8756965002. The cubic root of 65042220 is about 402.1596108849.

Adding to 65042220 its reverse (2224056), we get a palindrome (67266276).

The spelling of 65042220 in words is "sixty-five million, forty-two thousand, two hundred twenty".