68138496 has 200 divisors, whose sum is σ = 213897024. Its totient is φ = 21565440.

The previous prime is 68138479. The next prime is 68138509. The reversal of 68138496 is 69483186.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1285606 + ... + 1285658.

Almost surely, 2^68138496 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 68138496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106948512).

68138496 is an abundant number, since it is smaller than the sum of its proper divisors (145758528).

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

68138496 is an equidigital number, since it uses as much as digits as its factorization.

68138496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 89 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 68138496 is about 8254.6045332287. The cubic root of 68138496 is about 408.4424266428.

The spelling of 68138496 in words is "sixty-eight million, one hundred thirty-eight thousand, four hundred ninety-six".