68284215 has 48 divisors (see below), whose sum is σ = 125693568. Its totient is φ = 35544096.

The previous prime is 68284211. The next prime is 68284247. The reversal of 68284215 is 51248286.

It is not a de Polignac number, because 68284215 - 2² = 68284211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68284215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68284211) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51592 + ... + 52898.

It is an arithmetic number, because the mean of its divisors is an integer number (2618616).

Almost surely, 2^68284215 is an apocalyptic number.

68284215 is a deficient number, since it is larger than the sum of its proper divisors (57409353).

68284215 is a wasteful number, since it uses less digits than its factorization.

68284215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370 (or 1358 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 68284215 is about 8263.4263474663. The cubic root of 68284215 is about 408.7333803528.

The spelling of 68284215 in words is "sixty-eight million, two hundred eighty-four thousand, two hundred fifteen".