68999216 has 80 divisors (see below), whose sum is σ = 160302240. Its totient is φ = 28354560.

The previous prime is 68999197. The next prime is 68999233. The reversal of 68999216 is 61299986.

It is a super-2 number, since 2×68999216² = 9521783617229312, which contains 22 as substring.

Its product of digits (419904) is a multiple of the sum of its prime divisors (648).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120980 + ... + 121548.

It is an arithmetic number, because the mean of its divisors is an integer number (2003778).

Almost surely, 2^68999216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68999216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80151120).

68999216 is an abundant number, since it is smaller than the sum of its proper divisors (91303024).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68999216 is a wasteful number, since it uses less digits than its factorization.

68999216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654 (or 648 counting only the distinct ones).

The product of its digits is 419904, while the sum is 50.

The square root of 68999216 is about 8306.5766715296. The cubic root of 68999216 is about 410.1550395210.

It can be divided in two parts, 689 and 99216, that multiplied together give a square (68359824 = 8268²).

The spelling of 68999216 in words is "sixty-eight million, nine hundred ninety-nine thousand, two hundred sixteen".