68491400 has 48 divisors (see below), whose sum is σ = 164394240. Its totient is φ = 26510400.

The previous prime is 68491399. The next prime is 68491411. The reversal of 68491400 is 419486.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 677 + ... + 11723.

It is an arithmetic number, because the mean of its divisors is an integer number (3424880).

Almost surely, 2^68491400 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 68491400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82197120).

68491400 is an abundant number, since it is smaller than the sum of its proper divisors (95902840).

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

68491400 is a wasteful number, since it uses less digits than its factorization.

68491400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11094 (or 11085 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 68491400 is about 8275.9531173152. The cubic root of 68491400 is about 409.1463499871.

The spelling of 68491400 in words is "sixty-eight million, four hundred ninety-one thousand, four hundred".