65241680 has 80 divisors (see below), whose sum is σ = 175060224. Its totient is φ = 22149120.

The previous prime is 65241667. The next prime is 65241689. The reversal of 65241680 is 8614256.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65241689) 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, 62765 + ... + 63795.

Almost surely, 2^65241680 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 65241680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87530112).

65241680 is an abundant number, since it is smaller than the sum of its proper divisors (109818544).

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

65241680 is a wasteful number, since it uses less digits than its factorization.

65241680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1164 (or 1158 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 65241680 is about 8077.2321992128. The cubic root of 65241680 is about 402.5702820830.

The spelling of 65241680 in words is "sixty-five million, two hundred forty-one thousand, six hundred eighty".