68509436 has 6 divisors (see below), whose sum is σ = 119891520. Its totient is φ = 34254716.

The previous prime is 68509429. The next prime is 68509447. The reversal of 68509436 is 63490586.

It is a junction number, because it is equal to n+sod(n) for n = 68509393 and 68509402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8563676 + ... + 8563683.

It is an arithmetic number, because the mean of its divisors is an integer number (19981920).

Almost surely, 2^68509436 is an apocalyptic number.

It is an amenable number.

68509436 is a deficient number, since it is larger than the sum of its proper divisors (51382084).

68509436 is a wasteful number, since it uses less digits than its factorization.

68509436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17127363 (or 17127361 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 68509436 is about 8277.0427086007. The cubic root of 68509436 is about 409.1822606558.

The spelling of 68509436 in words is "sixty-eight million, five hundred nine thousand, four hundred thirty-six".