65416420 has 12 divisors (see below), whose sum is σ = 137374524. Its totient is φ = 26166560.

The previous prime is 65416409. The next prime is 65416423. The reversal of 65416420 is 2461456.

It can be written as a sum of positive squares in 2 ways, for example, as 23348224 + 42068196 = 4832^2 + 6486^2 .

It is not an unprimeable number, because it can be changed into a prime (65416423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1635391 + ... + 1635430.

It is an arithmetic number, because the mean of its divisors is an integer number (11447877).

Almost surely, 2^65416420 is an apocalyptic number.

It is an amenable number.

65416420 is an abundant number, since it is smaller than the sum of its proper divisors (71958104).

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

65416420 is a wasteful number, since it uses less digits than its factorization.

65416420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3270830 (or 3270828 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 65416420 is about 8088.0417901987. The cubic root of 65416420 is about 402.9293696143.

Adding to 65416420 its reverse (2461456), we get a palindrome (67877876).

The spelling of 65416420 in words is "sixty-five million, four hundred sixteen thousand, four hundred twenty".