68801540 has 12 divisors (see below), whose sum is σ = 144483276. Its totient is φ = 27520608.

The previous prime is 68801531. The next prime is 68801569. The reversal of 68801540 is 4510886.

It can be written as a sum of positive squares in 2 ways, for example, as 6959044 + 61842496 = 2638^2 + 7864^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 68801497 and 68801506.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1720019 + ... + 1720058.

It is an arithmetic number, because the mean of its divisors is an integer number (12040273).

Almost surely, 2^68801540 is an apocalyptic number.

It is an amenable number.

68801540 is an abundant number, since it is smaller than the sum of its proper divisors (75681736).

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

68801540 is a wasteful number, since it uses less digits than its factorization.

68801540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3440086 (or 3440084 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 68801540 is about 8294.6693725549. The cubic root of 68801540 is about 409.7629801981.

The spelling of 68801540 in words is "sixty-eight million, eight hundred one thousand, five hundred forty".