68389969 has 4 divisors (see below), whose sum is σ = 69353280. Its totient is φ = 67426660.

The previous prime is 68389943. The next prime is 68390011. The reversal of 68389969 is 96998386.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68389969 - 2¹³ = 68381777 is a prime.

It is a super-2 number, since 2×68389969² = 9354375719641922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68389169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 481549 + ... + 481690.

It is an arithmetic number, because the mean of its divisors is an integer number (17338320).

Almost surely, 2^68389969 is an apocalyptic number.

It is an amenable number.

68389969 is a deficient number, since it is larger than the sum of its proper divisors (963311).

68389969 is an equidigital number, since it uses as much as digits as its factorization.

68389969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963310.

The product of its digits is 5038848, while the sum is 58.

The square root of 68389969 is about 8269.8227913299. The cubic root of 68389969 is about 408.9442777729.

It can be divided in two parts, 6838 and 9969, that added together give a 5-th power (16807 = 7⁵).

The spelling of 68389969 in words is "sixty-eight million, three hundred eighty-nine thousand, nine hundred sixty-nine".