68398610 has 24 divisors (see below), whose sum is σ = 143219340. Its totient is φ = 23450784.

The previous prime is 68398609. The next prime is 68398639. The reversal of 68398610 is 1689386.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 67190809 + 1207801 = 8197^2 + 1099^2 .

It is an unprimeable number.

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, 69305 + ... + 70284.

Almost surely, 2^68398610 is an apocalyptic number.

68398610 is an abundant number, since it is smaller than the sum of its proper divisors (74820730).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68398610 is a wasteful number, since it uses less digits than its factorization.

68398610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139610 (or 139603 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 68398610 is about 8270.3452164949. The cubic root of 68398610 is about 408.9615002727.

The spelling of 68398610 in words is "sixty-eight million, three hundred ninety-eight thousand, six hundred ten".