68404347 has 12 divisors (see below), whose sum is σ = 107788824. Its totient is φ = 41457120.

The previous prime is 68404339. The next prime is 68404381. The reversal of 68404347 is 74340486.

It is not a de Polignac number, because 68404347 - 2³ = 68404339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68404307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 345378 + ... + 345575.

It is an arithmetic number, because the mean of its divisors is an integer number (8982402).

Almost surely, 2^68404347 is an apocalyptic number.

68404347 is a deficient number, since it is larger than the sum of its proper divisors (39384477).

68404347 is a wasteful number, since it uses less digits than its factorization.

68404347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690970 (or 690967 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 68404347 is about 8270.6920508504. The cubic root of 68404347 is about 408.9729339677.

The spelling of 68404347 in words is "sixty-eight million, four hundred four thousand, three hundred forty-seven".