68148409 has 8 divisors (see below), whose sum is σ = 77946048. Its totient is φ = 58366320.

The previous prime is 68148403. The next prime is 68148467. The reversal of 68148409 is 90484186.

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 68148409 - 2⁷ = 68148281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68148403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7899 + ... + 14095.

It is an arithmetic number, because the mean of its divisors is an integer number (9743256).

Almost surely, 2^68148409 is an apocalyptic number.

It is an amenable number.

68148409 is a deficient number, since it is larger than the sum of its proper divisors (9797639).

68148409 is a wasteful number, since it uses less digits than its factorization.

68148409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7775.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 68148409 is about 8255.2049641423. The cubic root of 68148409 is about 408.4622328399.

The spelling of 68148409 in words is "sixty-eight million, one hundred forty-eight thousand, four hundred nine".