65405604 has 48 divisors (see below), whose sum is σ = 169646400. Its totient is φ = 19443840.

The previous prime is 65405573. The next prime is 65405621. The reversal of 65405604 is 40650456.

It is a super-3 number, since 3×65405604³ (a number of 24 digits) contains 333 as substring.

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 15 ways as a sum of consecutive naturals, for example, 2322 + ... + 11670.

It is an arithmetic number, because the mean of its divisors is an integer number (3534300).

Almost surely, 2^65405604 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 65405604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84823200).

65405604 is an abundant number, since it is smaller than the sum of its proper divisors (104240796).

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

65405604 is a wasteful number, since it uses less digits than its factorization.

65405604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9420 (or 9418 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 65405604 is about 8087.3731211068. The cubic root of 65405604 is about 402.9071615088.

The spelling of 65405604 in words is "sixty-five million, four hundred five thousand, six hundred four".