68009400 has 72 divisors (see below), whose sum is σ = 228404280. Its totient is φ = 18135360.

The previous prime is 68009399. The next prime is 68009419. The reversal of 68009400 is 490086.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17092 + ... + 20691.

Almost surely, 2^68009400 is an apocalyptic number.

68009400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68009400 is an abundant number, since it is smaller than the sum of its proper divisors (160394880).

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

68009400 is a wasteful number, since it uses less digits than its factorization.

68009400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37805 (or 37793 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 68009400 is about 8246.7811902584. The cubic root of 68009400 is about 408.1843169516.

Adding to 68009400 its reverse (490086), we get a palindrome (68499486).

The spelling of 68009400 in words is "sixty-eight million, nine thousand, four hundred".