68557000 has 64 divisors (see below), whose sum is σ = 161740800. Its totient is φ = 27198400.

The previous prime is 68556979. The next prime is 68557009. The reversal of 68557000 is 75586.

It is not an unprimeable number, because it can be changed into a prime (68557009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178809 + ... + 179191.

It is an arithmetic number, because the mean of its divisors is an integer number (2527200).

Almost surely, 2^68557000 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 68557000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80870400).

68557000 is an abundant number, since it is smaller than the sum of its proper divisors (93183800).

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

68557000 is a wasteful number, since it uses less digits than its factorization.

68557000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583 (or 569 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 68557000 is about 8279.9154585056. The cubic root of 68557000 is about 409.2769329807.

The spelling of 68557000 in words is "sixty-eight million, five hundred fifty-seven thousand".