65209008 has 80 divisors (see below), whose sum is σ = 179854560. Its totient is φ = 20287488.

The previous prime is 65209003. The next prime is 65209013. The reversal of 65209008 is 80090256.

It is an interprime number because it is at equal distance from previous prime (65209003) and next prime (65209013).

It is not an unprimeable number, because it can be changed into a prime (65209003) by changing a digit.

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, 127858 + ... + 128366.

It is an arithmetic number, because the mean of its divisors is an integer number (2248182).

Almost surely, 2^65209008 is an apocalyptic number.

65209008 is a gapful number since it is divisible by the number (68) 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 65209008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89927280).

65209008 is an abundant number, since it is smaller than the sum of its proper divisors (114645552).

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

65209008 is a wasteful number, since it uses less digits than its factorization.

65209008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 65209008 is about 8075.2094709673. The cubic root of 65209008 is about 402.5030705886.

The spelling of 65209008 in words is "sixty-five million, two hundred nine thousand, eight".