68309415 has 24 divisors (see below), whose sum is σ = 119836080. Its totient is φ = 35990784.

The previous prime is 68309411. The next prime is 68309419. The reversal of 68309415 is 51490386.

It is an interprime number because it is at equal distance from previous prime (68309411) and next prime (68309419).

It is not a de Polignac number, because 68309415 - 2² = 68309411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68309415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68309411) 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 23 ways as a sum of consecutive naturals, for example, 5410 + ... + 12879.

It is an arithmetic number, because the mean of its divisors is an integer number (4993170).

Almost surely, 2^68309415 is an apocalyptic number.

68309415 is a deficient number, since it is larger than the sum of its proper divisors (51526665).

68309415 is a wasteful number, since it uses less digits than its factorization.

68309415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18383 (or 18380 counting only the distinct ones).

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

The square root of 68309415 is about 8264.9509980399. The cubic root of 68309415 is about 408.7836546091.

The spelling of 68309415 in words is "sixty-eight million, three hundred nine thousand, four hundred fifteen".