68701520 has 20 divisors (see below), whose sum is σ = 159731220. Its totient is φ = 27480576.

The previous prime is 68701519. The next prime is 68701531. The reversal of 68701520 is 2510786.

It can be written as a sum of positive squares in 2 ways, for example, as 36529936 + 32171584 = 6044^2 + 5672^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

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, 429305 + ... + 429464.

It is an arithmetic number, because the mean of its divisors is an integer number (7986561).

Almost surely, 2^68701520 is an apocalyptic number.

It is an amenable number.

68701520 is an abundant number, since it is smaller than the sum of its proper divisors (91029700).

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

68701520 is a wasteful number, since it uses less digits than its factorization.

68701520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858782 (or 858776 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 68701520 is about 8288.6380063313. The cubic root of 68701520 is about 409.5643200630.

The spelling of 68701520 in words is "sixty-eight million, seven hundred one thousand, five hundred twenty".