68400594 has 24 divisors (see below), whose sum is σ = 149869980. Its totient is φ = 22543488.

The previous prime is 68400583. The next prime is 68400599. The reversal of 68400594 is 49500486.

68400594 is a `hidden beast` number, since 68 + 4 + 0 + 0 + 594 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 59490369 + 8910225 = 7713^2 + 2985^2 .

It is not an unprimeable number, because it can be changed into a prime (68400599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19747 + ... + 22950.

Almost surely, 2^68400594 is an apocalyptic number.

68400594 is an abundant number, since it is smaller than the sum of its proper divisors (81469386).

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

68400594 is a wasteful number, since it uses less digits than its factorization.

68400594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42794 (or 42791 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 68400594 is about 8270.4651622505. The cubic root of 68400594 is about 408.9654544065.

The spelling of 68400594 in words is "sixty-eight million, four hundred thousand, five hundred ninety-four".