65450616 has 128 divisors (see below), whose sum is σ = 206530560. Its totient is φ = 16790400.

The previous prime is 65450603. The next prime is 65450657. The reversal of 65450616 is 61605456.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 197571 + ... + 197901.

It is an arithmetic number, because the mean of its divisors is an integer number (1613520).

Almost surely, 2^65450616 is an apocalyptic number.

65450616 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65450616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103265280).

65450616 is an abundant number, since it is smaller than the sum of its proper divisors (141079944).

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

65450616 is a wasteful number, since it uses less digits than its factorization.

65450616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465 (or 461 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 65450616 is about 8090.1554991236. The cubic root of 65450616 is about 402.9995669365. Note that the first 3 decimals are identical.

It can be divided in two parts, 65450 and 616, that added together give a palindrome (66066).

The spelling of 65450616 in words is "sixty-five million, four hundred fifty thousand, six hundred sixteen".