65404900 has 72 divisors (see below), whose sum is σ = 159114816. Its totient is φ = 23126400.

The previous prime is 65404883. The next prime is 65404903. The reversal of 65404900 is 940456.

It is not an unprimeable number, because it can be changed into a prime (65404903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39897 + ... + 41503.

It is an arithmetic number, because the mean of its divisors is an integer number (2209928).

Almost surely, 2^65404900 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 65404900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79557408).

65404900 is an abundant number, since it is smaller than the sum of its proper divisors (93709916).

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

65404900 is a wasteful number, since it uses less digits than its factorization.

65404900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1669 (or 1662 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 65404900 is about 8087.3295963501. The cubic root of 65404900 is about 402.9057159259.

The spelling of 65404900 in words is "sixty-five million, four hundred four thousand, nine hundred".