68768650 has 12 divisors (see below), whose sum is σ = 127909782. Its totient is φ = 27507440.

The previous prime is 68768647. The next prime is 68768663. The reversal of 68768650 is 5686786.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 56595529 + 12173121 = 7523^2 + 3489^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68768650.

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 5 ways as a sum of consecutive naturals, for example, 687637 + ... + 687736.

Almost surely, 2^68768650 is an apocalyptic number.

68768650 is a deficient number, since it is larger than the sum of its proper divisors (59141132).

68768650 is a wasteful number, since it uses less digits than its factorization.

68768650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375385 (or 1375380 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The square root of 68768650 is about 8292.6865369433. The cubic root of 68768650 is about 409.6976752038.

The spelling of 68768650 in words is "sixty-eight million, seven hundred sixty-eight thousand, six hundred fifty".