68405319 has 12 divisors (see below), whose sum is σ = 98889336. Its totient is φ = 45565872.

The previous prime is 68405317. The next prime is 68405321. The reversal of 68405319 is 91350486.

It is an interprime number because it is at equal distance from previous prime (68405317) and next prime (68405321).

It is not a de Polignac number, because 68405319 - 2¹ = 68405317 is a prime.

It is a super-2 number, since 2×68405319² = 9358575334983522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68405317) 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 11 ways as a sum of consecutive naturals, for example, 12412 + ... + 17054.

It is an arithmetic number, because the mean of its divisors is an integer number (8240778).

Almost surely, 2^68405319 is an apocalyptic number.

68405319 is a deficient number, since it is larger than the sum of its proper divisors (30484017).

68405319 is a wasteful number, since it uses less digits than its factorization.

68405319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6286 (or 6283 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 68405319 is about 8270.7508123507. The cubic root of 68405319 is about 408.9748710756.

The spelling of 68405319 in words is "sixty-eight million, four hundred five thousand, three hundred nineteen".