68999982 has 32 divisors (see below), whose sum is σ = 145737600. Its totient is φ = 21718368.

The previous prime is 68999981. The next prime is 69000047. The reversal of 68999982 is 28999986.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68999981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42408 + ... + 44004.

It is an arithmetic number, because the mean of its divisors is an integer number (4554300).

Almost surely, 2^68999982 is an apocalyptic number.

68999982 is an abundant number, since it is smaller than the sum of its proper divisors (76737618).

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

68999982 is a wasteful number, since it uses less digits than its factorization.

68999982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2000.

The product of its digits is 5038848, while the sum is 60.

The square root of 68999982 is about 8306.6227794453. The cubic root of 68999982 is about 410.1565573044.

The spelling of 68999982 in words is "sixty-eight million, nine hundred ninety-nine thousand, nine hundred eighty-two".