68817819 has 16 divisors (see below), whose sum is σ = 111034368. Its totient is φ = 37011072.

The previous prime is 68817809. The next prime is 68817839. The reversal of 68817819 is 91871886.

It is not a de Polignac number, because 68817819 - 2¹³ = 68809627 is a prime.

It is a super-2 number, since 2×68817819² = 9471784423833522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68817809) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96027 + ... + 96740.

It is an arithmetic number, because the mean of its divisors is an integer number (6939648).

Almost surely, 2^68817819 is an apocalyptic number.

68817819 is a deficient number, since it is larger than the sum of its proper divisors (42216549).

68817819 is a wasteful number, since it uses less digits than its factorization.

68817819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192794.

The product of its digits is 193536, while the sum is 48.

The square root of 68817819 is about 8295.6506073966. The cubic root of 68817819 is about 409.7952953930.

The spelling of 68817819 in words is "sixty-eight million, eight hundred seventeen thousand, eight hundred nineteen".