65047680 has 192 divisors, whose sum is σ = 234861120. Its totient is φ = 16558080.

The previous prime is 65047673. The next prime is 65047699. The reversal of 65047680 is 8674056.

It is a happy number.

65047680 is a `hidden beast` number, since 6 + 504 + 76 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 132235 + ... + 132725.

It is an arithmetic number, because the mean of its divisors is an integer number (1223235).

Almost surely, 2^65047680 is an apocalyptic number.

65047680 is a gapful number since it is divisible by the number (60) 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 65047680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117430560).

65047680 is an abundant number, since it is smaller than the sum of its proper divisors (169813440).

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

65047680 is a wasteful number, since it uses less digits than its factorization.

65047680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 65047680 is about 8065.2141943038. The cubic root of 65047680 is about 402.1708637298.

The spelling of 65047680 in words is "sixty-five million, forty-seven thousand, six hundred eighty".