68889030 has 32 divisors (see below), whose sum is σ = 188953344. Its totient is φ = 15746016.

The previous prime is 68889019. The next prime is 68889031. The reversal of 68889030 is 3098886.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68889031) 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, 163812 + ... + 164231.

It is an arithmetic number, because the mean of its divisors is an integer number (5904792).

Almost surely, 2^68889030 is an apocalyptic number.

68889030 is an abundant number, since it is smaller than the sum of its proper divisors (120064314).

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

68889030 is a wasteful number, since it uses less digits than its factorization.

68889030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328060.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 68889030 is about 8299.9415660594. The cubic root of 68889030 is about 409.9365953906.

The spelling of 68889030 in words is "sixty-eight million, eight hundred eighty-nine thousand, thirty".