68321400 has 96 divisors (see below), whose sum is σ = 242067840. Its totient is φ = 15615360.

The previous prime is 68321389. The next prime is 68321401. The reversal of 68321400 is 412386.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68321401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3934 + ... + 12333.

It is an arithmetic number, because the mean of its divisors is an integer number (2521540).

Almost surely, 2^68321400 is an apocalyptic number.

68321400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68321400 is an abundant number, since it is smaller than the sum of its proper divisors (173746440).

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

68321400 is a wasteful number, since it uses less digits than its factorization.

68321400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16293 (or 16284 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 68321400 is about 8265.6760159106. The cubic root of 68321400 is about 408.8075604675.

Adding to 68321400 its reverse (412386), we get a palindrome (68733786).

The spelling of 68321400 in words is "sixty-eight million, three hundred twenty-one thousand, four hundred".