68312630 has 16 divisors (see below), whose sum is σ = 130196160. Its totient is φ = 25717632.

The previous prime is 68312593. The next prime is 68312639. The reversal of 68312630 is 3621386.

It is a junction number, because it is equal to n+sod(n) for n = 68312593 and 68312602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68312639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 200750 + ... + 201089.

It is an arithmetic number, because the mean of its divisors is an integer number (8137260).

Almost surely, 2^68312630 is an apocalyptic number.

68312630 is a deficient number, since it is larger than the sum of its proper divisors (61883530).

68312630 is a wasteful number, since it uses less digits than its factorization.

68312630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401863.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 68312630 is about 8265.1454917624. The cubic root of 68312630 is about 408.7900676774.

The spelling of 68312630 in words is "sixty-eight million, three hundred twelve thousand, six hundred thirty".