68215912 has 16 divisors (see below), whose sum is σ = 128090340. Its totient is φ = 34058496.

The previous prime is 68215879. The next prime is 68215937. The reversal of 68215912 is 21951286.

It can be written as a sum of positive squares in 2 ways, for example, as 57365476 + 10850436 = 7574^2 + 3294^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48 + ... + 11680.

Almost surely, 2^68215912 is an apocalyptic number.

It is an amenable number.

68215912 is a deficient number, since it is larger than the sum of its proper divisors (59874428).

68215912 is a wasteful number, since it uses less digits than its factorization.

68215912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12372 (or 12368 counting only the distinct ones).

The product of its digits is 8640, while the sum is 34.

The square root of 68215912 is about 8259.2924636436. The cubic root of 68215912 is about 408.5970529467.

The spelling of 68215912 in words is "sixty-eight million, two hundred fifteen thousand, nine hundred twelve".