68969380 has 48 divisors (see below), whose sum is σ = 149410800. Its totient is φ = 26726400.

The previous prime is 68969371. The next prime is 68969413. The reversal of 68969380 is 8396986.

It can be written as a sum of positive squares in 8 ways, for example, as 675684 + 68293696 = 822^2 + 8264^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197446 + ... + 197794.

It is an arithmetic number, because the mean of its divisors is an integer number (3112725).

Almost surely, 2^68969380 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 68969380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74705400).

68969380 is an abundant number, since it is smaller than the sum of its proper divisors (80441420).

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

68969380 is a wasteful number, since it uses less digits than its factorization.

68969380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 68969380 is about 8304.7805509839. The cubic root of 68969380 is about 410.0959125205.

The spelling of 68969380 in words is "sixty-eight million, nine hundred sixty-nine thousand, three hundred eighty".