68148785 has 8 divisors (see below), whose sum is σ = 82899240. Its totient is φ = 53771904.

The previous prime is 68148779. The next prime is 68148799. The reversal of 68148785 is 58784186.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19651489 + 48497296 = 4433^2 + 6964^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 68148785 - 2⁶ = 68148721 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92990 + ... + 93719.

It is an arithmetic number, because the mean of its divisors is an integer number (10362405).

Almost surely, 2^68148785 is an apocalyptic number.

It is an amenable number.

68148785 is a deficient number, since it is larger than the sum of its proper divisors (14750455).

68148785 is a wasteful number, since it uses less digits than its factorization.

68148785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186787.

The product of its digits is 430080, while the sum is 47.

The square root of 68148785 is about 8255.2277376218. The cubic root of 68148785 is about 408.4629840510.

The spelling of 68148785 in words is "sixty-eight million, one hundred forty-eight thousand, seven hundred eighty-five".