68215995 has 24 divisors (see below), whose sum is σ = 120184272. Its totient is φ = 35784000.

The previous prime is 68215981. The next prime is 68216003. The reversal of 68215995 is 59951286.

It is not a de Polignac number, because 68215995 - 2⁵ = 68215963 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 68215995.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9681 + ... + 15170.

It is an arithmetic number, because the mean of its divisors is an integer number (5007678).

Almost surely, 2^68215995 is an apocalyptic number.

68215995 is a deficient number, since it is larger than the sum of its proper divisors (51968277).

68215995 is a wasteful number, since it uses less digits than its factorization.

68215995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24923 (or 24920 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 68215995 is about 8259.2974882856. The cubic root of 68215995 is about 408.5972186634.

The spelling of 68215995 in words is "sixty-eight million, two hundred fifteen thousand, nine hundred ninety-five".