68217630 has 32 divisors (see below), whose sum is σ = 176317344. Its totient is φ = 16791936.

The previous prime is 68217613. The next prime is 68217641. The reversal of 68217630 is 3671286.

It is a junction number, because it is equal to n+sod(n) for n = 68217591 and 68217600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87069 + ... + 87848.

It is an arithmetic number, because the mean of its divisors is an integer number (5509917).

Almost surely, 2^68217630 is an apocalyptic number.

68217630 is an abundant number, since it is smaller than the sum of its proper divisors (108099714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68217630 is a wasteful number, since it uses less digits than its factorization.

68217630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174940.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 68217630 is about 8259.3964670550. The cubic root of 68217630 is about 408.6004830548.

The spelling of 68217630 in words is "sixty-eight million, two hundred seventeen thousand, six hundred thirty".