68215844 has 12 divisors (see below), whose sum is σ = 119548800. Its totient is φ = 34059048.

The previous prime is 68215843. The next prime is 68215853. The reversal of 68215844 is 44851286.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 68215798 and 68215807.

It is not an unprimeable number, because it can be changed into a prime (68215843) 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, 8984 + ... + 14735.

It is an arithmetic number, because the mean of its divisors is an integer number (9962400).

Almost surely, 2^68215844 is an apocalyptic number.

It is an amenable number.

68215844 is a deficient number, since it is larger than the sum of its proper divisors (51332956).

68215844 is a wasteful number, since it uses less digits than its factorization.

68215844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24442 (or 24440 counting only the distinct ones).

The product of its digits is 61440, while the sum is 38.

The square root of 68215844 is about 8259.2883470672. The cubic root of 68215844 is about 408.5969171787.

The spelling of 68215844 in words is "sixty-eight million, two hundred fifteen thousand, eight hundred forty-four".