67559968 has 48 divisors (see below), whose sum is σ = 152881344. Its totient is φ = 28788480.

The previous prime is 67559963. The next prime is 67559969. The reversal of 67559968 is 86995576.

It is a happy number.

It is a super-2 number, since 2×67559968² = 9128698552322048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67559963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43363 + ... + 44893.

It is an arithmetic number, because the mean of its divisors is an integer number (3185028).

Almost surely, 2^67559968 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 67559968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76440672).

67559968 is an abundant number, since it is smaller than the sum of its proper divisors (85321376).

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

67559968 is a wasteful number, since it uses less digits than its factorization.

67559968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745 (or 1737 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 55.

The square root of 67559968 is about 8219.4870886206. The cubic root of 67559968 is about 407.2831832408.

The spelling of 67559968 in words is "sixty-seven million, five hundred fifty-nine thousand, nine hundred sixty-eight".