68604400 has 60 divisors (see below), whose sum is σ = 172011312. Its totient is φ = 26245120.

The previous prime is 68604391. The next prime is 68604407. The reversal of 68604400 is 440686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68604407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5472 + ... + 12928.

Almost surely, 2^68604400 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 68604400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86005656).

68604400 is an abundant number, since it is smaller than the sum of its proper divisors (103406912).

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

68604400 is a wasteful number, since it uses less digits than its factorization.

68604400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7498 (or 7487 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 68604400 is about 8282.7773119890. Note that the first 3 decimals coincide. The cubic root of 68604400 is about 409.3712353246.

The spelling of 68604400 in words is "sixty-eight million, six hundred four thousand, four hundred".