68187400 has 24 divisors (see below), whose sum is σ = 158536170. Its totient is φ = 27274880.

The previous prime is 68187359. The next prime is 68187401. The reversal of 68187400 is 478186.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 38962564 + 29224836 = 6242^2 + 5406^2 .

It is not an unprimeable number, because it can be changed into a prime (68187401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 170269 + ... + 170668.

Almost surely, 2^68187400 is an apocalyptic number.

It is an amenable number.

68187400 is an abundant number, since it is smaller than the sum of its proper divisors (90348770).

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

68187400 is a wasteful number, since it uses less digits than its factorization.

68187400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340953 (or 340944 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 68187400 is about 8257.5662274062. The cubic root of 68187400 is about 408.5401183191.

The spelling of 68187400 in words is "sixty-eight million, one hundred eighty-seven thousand, four hundred".