68398646 has 8 divisors (see below), whose sum is σ = 106135920. Its totient is φ = 33020008.

The previous prime is 68398643. The next prime is 68398661. The reversal of 68398646 is 64689386.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 68398594 and 68398603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68398643) 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 3 ways as a sum of consecutive naturals, for example, 589586 + ... + 589701.

It is an arithmetic number, because the mean of its divisors is an integer number (13266990).

Almost surely, 2^68398646 is an apocalyptic number.

68398646 is a deficient number, since it is larger than the sum of its proper divisors (37737274).

68398646 is a wasteful number, since it uses less digits than its factorization.

68398646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179318.

The product of its digits is 1492992, while the sum is 50.

The square root of 68398646 is about 8270.3473929455. The cubic root of 68398646 is about 408.9615720218.

The spelling of 68398646 in words is "sixty-eight million, three hundred ninety-eight thousand, six hundred forty-six".