68398870 has 16 divisors (see below), whose sum is σ = 123346800. Its totient is φ = 27308704.

The previous prime is 68398861. The next prime is 68398909. The reversal of 68398870 is 7889386.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 445 + ... + 11704.

It is an arithmetic number, because the mean of its divisors is an integer number (7709175).

Almost surely, 2^68398870 is an apocalyptic number.

68398870 is a deficient number, since it is larger than the sum of its proper divisors (54947930).

68398870 is a wasteful number, since it uses less digits than its factorization.

68398870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12719.

The product of its (nonzero) digits is 580608, while the sum is 49.

The square root of 68398870 is about 8270.3609352918. The cubic root of 68398870 is about 408.9620184599.

The spelling of 68398870 in words is "sixty-eight million, three hundred ninety-eight thousand, eight hundred seventy".