68087130 has 64 divisors (see below), whose sum is σ = 172378368. Its totient is φ = 17177600.

The previous prime is 68087111. The next prime is 68087137. The reversal of 68087130 is 3178086.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68087091 and 68087100.

It is not an unprimeable number, because it can be changed into a prime (68087137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69202 + ... + 70178.

It is an arithmetic number, because the mean of its divisors is an integer number (2693412).

Almost surely, 2^68087130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68087130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86189184).

68087130 is an abundant number, since it is smaller than the sum of its proper divisors (104291238).

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

68087130 is a wasteful number, since it uses less digits than its factorization.

68087130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 68087130 is about 8251.4925922526. The cubic root of 68087130 is about 408.3397664774.

The spelling of 68087130 in words is "sixty-eight million, eighty-seven thousand, one hundred thirty".