65420000 has 60 divisors (see below), whose sum is σ = 160992216. Its totient is φ = 26160000.

The previous prime is 65419987. The next prime is 65420009. The reversal of 65420000 is 2456.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65420009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 18365 + ... + 21635.

Almost surely, 2^65420000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65420000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80496108).

65420000 is an abundant number, since it is smaller than the sum of its proper divisors (95572216).

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

65420000 is an equidigital number, since it uses as much as digits as its factorization.

65420000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3301 (or 3278 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 65420000 is about 8088.2631015565. The cubic root of 65420000 is about 402.9367197609.

Adding to 65420000 its reverse (2456), we get a palindrome (65422456).

The spelling of 65420000 in words is "sixty-five million, four hundred twenty thousand".