68999215 has 8 divisors (see below), whose sum is σ = 83039760. Its totient is φ = 55038912.

The previous prime is 68999197. The next prime is 68999233. The reversal of 68999215 is 51299986.

It is an interprime number because it is at equal distance from previous prime (68999197) and next prime (68999233).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68999215 - 2¹⁹ = 68474927 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18150 + ... + 21619.

It is an arithmetic number, because the mean of its divisors is an integer number (10379970).

Almost surely, 2^68999215 is an apocalyptic number.

68999215 is a deficient number, since it is larger than the sum of its proper divisors (14040545).

68999215 is a wasteful number, since it uses less digits than its factorization.

68999215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40121.

The product of its digits is 349920, while the sum is 49.

The square root of 68999215 is about 8306.5766113363. The cubic root of 68999215 is about 410.1550375396.

The spelling of 68999215 in words is "sixty-eight million, nine hundred ninety-nine thousand, two hundred fifteen".