68774389 has 8 divisors (see below), whose sum is σ = 70299320. Its totient is φ = 67262400.

The previous prime is 68774383. The next prime is 68774413. The reversal of 68774389 is 98347786.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4100625 + 64673764 = 2025^2 + 8042^2 .

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 68774389 - 2¹⁷ = 68643317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68774383) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7927 + ... + 14155.

It is an arithmetic number, because the mean of its divisors is an integer number (8787415).

Almost surely, 2^68774389 is an apocalyptic number.

It is an amenable number.

68774389 is a deficient number, since it is larger than the sum of its proper divisors (1524931).

68774389 is a wasteful number, since it uses less digits than its factorization.

68774389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6471.

The product of its digits is 2032128, while the sum is 52.

The square root of 68774389 is about 8293.0325575148. The cubic root of 68774389 is about 409.7090718192.

It can be divided in two parts, 687 and 74389, that added together give a square (75076 = 274²).

The spelling of 68774389 in words is "sixty-eight million, seven hundred seventy-four thousand, three hundred eighty-nine".