68815000 has 40 divisors (see below), whose sum is σ = 161245260. Its totient is φ = 27524000.

The previous prime is 68814989. The next prime is 68815013. The reversal of 68815000 is 51886.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 68815000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1882 + ... + 11881.

Almost surely, 2^68815000 is an apocalyptic number.

It is an amenable number.

68815000 is an abundant number, since it is smaller than the sum of its proper divisors (92430260).

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

68815000 is a wasteful number, since it uses less digits than its factorization.

68815000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13789 (or 13770 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 68815000 is about 8295.4806973436. The cubic root of 68815000 is about 409.7896998039.

Adding to 68815000 its reverse (51886), we get a palindrome (68866886).

It can be divided in two parts, 6881 and 5000, that added together give a square (11881 = 109²).

The spelling of 68815000 in words is "sixty-eight million, eight hundred fifteen thousand".