68840898 has 32 divisors (see below), whose sum is σ = 159513216. Its totient is φ = 19398528.

The previous prime is 68840897. The next prime is 68840917. The reversal of 68840898 is 89804886.

It is a self number, because there is not a number n which added to its sum of digits gives 68840898.

It is not an unprimeable number, because it can be changed into a prime (68840897) 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, 8161 + ... + 14292.

It is an arithmetic number, because the mean of its divisors is an integer number (4984788).

Almost surely, 2^68840898 is an apocalyptic number.

68840898 is an abundant number, since it is smaller than the sum of its proper divisors (90672318).

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

68840898 is a wasteful number, since it uses less digits than its factorization.

68840898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22538.

The product of its (nonzero) digits is 884736, while the sum is 51.

The square root of 68840898 is about 8297.0415209278. The cubic root of 68840898 is about 409.8411004316.

The spelling of 68840898 in words is "sixty-eight million, eight hundred forty thousand, eight hundred ninety-eight".