65355620 has 48 divisors (see below), whose sum is σ = 150292800. Its totient is φ = 23675520.

The previous prime is 65355613. The next prime is 65355623. The reversal of 65355620 is 2655356.

It is not an unprimeable number, because it can be changed into a prime (65355623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91826 + ... + 92534.

It is an arithmetic number, because the mean of its divisors is an integer number (3131100).

Almost surely, 2^65355620 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 65355620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75146400).

65355620 is an abundant number, since it is smaller than the sum of its proper divisors (84937180).

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

65355620 is a wasteful number, since it uses less digits than its factorization.

65355620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148 (or 1146 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 65355620 is about 8084.2822810686. The cubic root of 65355620 is about 402.8044993378.

The spelling of 65355620 in words is "sixty-five million, three hundred fifty-five thousand, six hundred twenty".