68511198 has 32 divisors (see below), whose sum is σ = 160833024. Its totient is φ = 19045152.

The previous prime is 68511133. The next prime is 68511199. The reversal of 68511198 is 89111586.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68511199) 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, 20490 + ... + 23597.

It is an arithmetic number, because the mean of its divisors is an integer number (5026032).

Almost surely, 2^68511198 is an apocalyptic number.

68511198 is an abundant number, since it is smaller than the sum of its proper divisors (92321826).

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

68511198 is a wasteful number, since it uses less digits than its factorization.

68511198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44136.

The product of its digits is 17280, while the sum is 39.

The square root of 68511198 is about 8277.1491468983. The cubic root of 68511198 is about 409.1857685568.

The spelling of 68511198 in words is "sixty-eight million, five hundred eleven thousand, one hundred ninety-eight".