68169419 has 4 divisors (see below), whose sum is σ = 68667144. Its totient is φ = 67671696.

The previous prime is 68169383. The next prime is 68169427. The reversal of 68169419 is 91496186.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68169419 - 2⁸ = 68169163 is a prime.

It is a super-2 number, since 2×68169419² = 9294139373595122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68169419.

It is not an unprimeable number, because it can be changed into a prime (68169719) 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, 248657 + ... + 248930.

It is an arithmetic number, because the mean of its divisors is an integer number (17166786).

Almost surely, 2^68169419 is an apocalyptic number.

68169419 is a deficient number, since it is larger than the sum of its proper divisors (497725).

68169419 is a wasteful number, since it uses less digits than its factorization.

68169419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497724.

The product of its digits is 93312, while the sum is 44.

The square root of 68169419 is about 8256.4773965657. The cubic root of 68169419 is about 408.5042045204.

The spelling of 68169419 in words is "sixty-eight million, one hundred sixty-nine thousand, four hundred nineteen".