68520786 has 8 divisors (see below), whose sum is σ = 137041584. Its totient is φ = 22840260.

The previous prime is 68520769. The next prime is 68520787. The reversal of 68520786 is 68702586.

It is a sphenic number, since it is the product of 3 distinct primes.

68520786 is an admirable number.

It is a super-2 number, since 2×68520786² = 9390196228115592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68520787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5710060 + ... + 5710071.

It is an arithmetic number, because the mean of its divisors is an integer number (17130198).

Almost surely, 2^68520786 is an apocalyptic number.

68520786 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

68520786 is a wasteful number, since it uses less digits than its factorization.

68520786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11420136.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 68520786 is about 8277.7283115599. The cubic root of 68520786 is about 409.2048558995.

The spelling of 68520786 in words is "sixty-eight million, five hundred twenty thousand, seven hundred eighty-six".