65320000 has 140 divisors (see below), whose sum is σ = 171395136. Its totient is φ = 24640000.

The previous prime is 65319997. The next prime is 65320027. The reversal of 65320000 is 2356.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

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, 919965 + ... + 920035.

Almost surely, 2^65320000 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 65320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85697568).

65320000 is an abundant number, since it is smaller than the sum of its proper divisors (106075136).

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

65320000 is an equidigital number, since it uses as much as digits as its factorization.

65320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 65320000 is about 8082.0789404707. The cubic root of 65320000 is about 402.7313074497.

Adding to 65320000 its reverse (2356), we get a palindrome (65322356).

The spelling of 65320000 in words is "sixty-five million, three hundred twenty thousand".