68516320 has 24 divisors (see below), whose sum is σ = 161870184. Its totient is φ = 27406464.

The previous prime is 68516317. The next prime is 68516323. The reversal of 68516320 is 2361586.

It is an interprime number because it is at equal distance from previous prime (68516317) and next prime (68516323).

It is a super-2 number, since 2×68516320² = 9388972212684800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68516323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213954 + ... + 214273.

It is an arithmetic number, because the mean of its divisors is an integer number (6744591).

Almost surely, 2^68516320 is an apocalyptic number.

It is an amenable number.

68516320 is an abundant number, since it is smaller than the sum of its proper divisors (93353864).

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

68516320 is a wasteful number, since it uses less digits than its factorization.

68516320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428242 (or 428234 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 68516320 is about 8277.4585471629. The cubic root of 68516320 is about 409.1959654168.

The spelling of 68516320 in words is "sixty-eight million, five hundred sixteen thousand, three hundred twenty".