65041680 has 160 divisors (see below), whose sum is σ = 223699968. Its totient is φ = 15500800.

The previous prime is 65041673. The next prime is 65041681. The reversal of 65041680 is 8614056.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (65041681) 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 31 ways as a sum of consecutive naturals, for example, 187267 + ... + 187613.

Almost surely, 2^65041680 is an apocalyptic number.

65041680 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 65041680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111849984).

65041680 is an abundant number, since it is smaller than the sum of its proper divisors (158658288).

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

65041680 is a wasteful number, since it uses less digits than its factorization.

65041680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 65041680 is about 8064.8422179234. The cubic root of 65041680 is about 402.1584979319.

The spelling of 65041680 in words is "sixty-five million, forty-one thousand, six hundred eighty".