68698819 has 32 divisors (see below), whose sum is σ = 86593536. Its totient is φ = 53168640.

The previous prime is 68698811. The next prime is 68698823. The reversal of 68698819 is 91889686.

It is not a de Polignac number, because 68698819 - 2³ = 68698811 is a prime.

It is a super-2 number, since 2×68698819² = 9439055463989522, 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 68698819.

It is not an unprimeable number, because it can be changed into a prime (68698811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 397017 + ... + 397189.

It is an arithmetic number, because the mean of its divisors is an integer number (2706048).

Almost surely, 2^68698819 is an apocalyptic number.

68698819 is a deficient number, since it is larger than the sum of its proper divisors (17894717).

68698819 is a wasteful number, since it uses less digits than its factorization.

68698819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315.

The product of its digits is 1492992, while the sum is 55.

The square root of 68698819 is about 8288.4750708439. The cubic root of 68698819 is about 409.5589526528.

The spelling of 68698819 in words is "sixty-eight million, six hundred ninety-eight thousand, eight hundred nineteen".