68765650 has 12 divisors (see below), whose sum is σ = 127904202. Its totient is φ = 27506240.

The previous prime is 68765639. The next prime is 68765659. The reversal of 68765650 is 5656786.

It can be written as a sum of positive squares in 3 ways, for example, as 47485881 + 21279769 = 6891^2 + 4613^2 .

It is a junction number, because it is equal to n+sod(n) for n = 68765597 and 68765606.

It is not an unprimeable number, because it can be changed into a prime (68765659) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 687607 + ... + 687706.

Almost surely, 2^68765650 is an apocalyptic number.

68765650 is a deficient number, since it is larger than the sum of its proper divisors (59138552).

68765650 is a wasteful number, since it uses less digits than its factorization.

68765650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375325 (or 1375320 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 68765650 is about 8292.5056526963. The cubic root of 68765650 is about 409.6917174944.

The spelling of 68765650 in words is "sixty-eight million, seven hundred sixty-five thousand, six hundred fifty".