3457778689 has 4 divisors (see below), whose sum is σ = 3458045956. Its totient is φ = 3457511424.

The previous prime is 3457778677. The next prime is 3457778741. The reversal of 3457778689 is 9868777543.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1798438464 + 1659340225 = 42408^2 + 40735^2 .

It is a cyclic number.

It is not a de Polignac number, because 3457778689 - 2¹³ = 3457770497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3457778689.

It is not an unprimeable number, because it can be changed into a prime (3427778689) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 113184 + ... + 140449.

It is an arithmetic number, because the mean of its divisors is an integer number (864511489).

Almost surely, 2^3457778689 is an apocalyptic number.

It is an amenable number.

3457778689 is a deficient number, since it is larger than the sum of its proper divisors (267267).

3457778689 is a wasteful number, since it uses less digits than its factorization.

3457778689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267266.

The product of its digits is 71124480, while the sum is 64.

The square root of 3457778689 is about 58802.8799379758. The cubic root of 3457778689 is about 1512.1645912818.

The spelling of 3457778689 in words is "three billion, four hundred fifty-seven million, seven hundred seventy-eight thousand, six hundred eighty-nine".