68549400 has 72 divisors (see below), whose sum is σ = 230217780. Its totient is φ = 18279360.

The previous prime is 68549381. The next prime is 68549431. The reversal of 68549400 is 494586.

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 17242 + ... + 20841.

Almost surely, 2^68549400 is an apocalyptic number.

68549400 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68549400 is an abundant number, since it is smaller than the sum of its proper divisors (161668380).

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

68549400 is a wasteful number, since it uses less digits than its factorization.

68549400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38105 (or 38093 counting only the distinct ones).

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

The square root of 68549400 is about 8279.4565039017. The cubic root of 68549400 is about 409.2618087306.

The spelling of 68549400 in words is "sixty-eight million, five hundred forty-nine thousand, four hundred".