65120000 has 180 divisors, whose sum is σ = 181985496. Its totient is φ = 23040000.

The previous prime is 65119997. The next prime is 65120009. The reversal of 65120000 is 2156.

It is a super-2 number, since 2×65120000² = 8481228800000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65120009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1759982 + ... + 1760018.

Almost surely, 2^65120000 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 65120000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90992748).

65120000 is an abundant number, since it is smaller than the sum of its proper divisors (116865496).

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

65120000 is an equidigital number, since it uses as much as digits as its factorization.

65120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 65120000 is about 8069.6964007328. The cubic root of 65120000 is about 402.3198530282.

Adding to 65120000 its reverse (2156), we get a palindrome (65122156).

The spelling of 65120000 in words is "sixty-five million, one hundred twenty thousand".