68417536 has 48 divisors (see below), whose sum is σ = 149287320. Its totient is φ = 31088640.

The previous prime is 68417533. The next prime is 68417563. The reversal of 68417536 is 63571486.

It is a happy number.

It is a super-2 number, since 2×68417536² = 9361918464622592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68417533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21010 + ... + 24046.

Almost surely, 2^68417536 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 68417536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74643660).

68417536 is an abundant number, since it is smaller than the sum of its proper divisors (80869784).

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

68417536 is a wasteful number, since it uses less digits than its factorization.

68417536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3070 (or 3050 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 68417536 is about 8271.4893459401. The cubic root of 68417536 is about 408.9992168851. Note that the first 3 decimals are identical.

The spelling of 68417536 in words is "sixty-eight million, four hundred seventeen thousand, five hundred thirty-six".