68401398 has 32 divisors (see below), whose sum is σ = 148226400. Its totient is φ = 21042528.

The previous prime is 68401397. The next prime is 68401427. The reversal of 68401398 is 89310486.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68401397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10588 + ... + 15776.

It is an arithmetic number, because the mean of its divisors is an integer number (4632075).

Almost surely, 2^68401398 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68401398, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74113200).

68401398 is an abundant number, since it is smaller than the sum of its proper divisors (79825002).

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

68401398 is a wasteful number, since it uses less digits than its factorization.

68401398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5233 (or 5207 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 68401398 is about 8270.5137688054. The cubic root of 68401398 is about 408.9670567656.

The spelling of 68401398 in words is "sixty-eight million, four hundred one thousand, three hundred ninety-eight".