68517396 has 72 divisors (see below), whose sum is σ = 180566568. Its totient is φ = 21888000.

The previous prime is 68517373. The next prime is 68517431. The reversal of 68517396 is 69371586.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19236996 + 49280400 = 4386^2 + 7020^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89656 + ... + 90416.

It is an arithmetic number, because the mean of its divisors is an integer number (2507869).

Almost surely, 2^68517396 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 68517396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90283284).

68517396 is an abundant number, since it is smaller than the sum of its proper divisors (112049172).

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

68517396 is a wasteful number, since it uses less digits than its factorization.

68517396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 873 (or 868 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 68517396 is about 8277.5235427029. The cubic root of 68517396 is about 409.1981074493.

It can be divided in two parts, 685 and 17396, that added together give a palindrome (18081).

The spelling of 68517396 in words is "sixty-eight million, five hundred seventeen thousand, three hundred ninety-six".