67216560 has 40 divisors (see below), whose sum is σ = 208372080. Its totient is φ = 17924352.

The previous prime is 67216537. The next prime is 67216573. The reversal of 67216560 is 6561276.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139795 + ... + 140274.

It is an arithmetic number, because the mean of its divisors is an integer number (5209302).

Almost surely, 2^67216560 is an apocalyptic number.

67216560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

67216560 is an abundant number, since it is smaller than the sum of its proper divisors (141155520).

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

67216560 is a wasteful number, since it uses less digits than its factorization.

67216560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280085 (or 280079 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 67216560 is about 8198.5706071241. The cubic root of 67216560 is about 406.5919358634.

It can be divided in two parts, 67216 and 560, that added together give a palindrome (67776).

The spelling of 67216560 in words is "sixty-seven million, two hundred sixteen thousand, five hundred sixty".