68749369 has 18 divisors (see below), whose sum is σ = 77923230. Its totient is φ = 60622848.

The previous prime is 68749363. The next prime is 68749403. The reversal of 68749369 is 96394786.

It can be written as a sum of positive squares in 3 ways, for example, as 190969 + 68558400 = 437^2 + 8280^2 .

It is not a de Polignac number, because 68749369 - 2³ = 68749361 is a prime.

It is a super-2 number, since 2×68749369² = 9452951475796322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68749361) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 89017 + ... + 89785.

Almost surely, 2^68749369 is an apocalyptic number.

It is an amenable number.

68749369 is a deficient number, since it is larger than the sum of its proper divisors (9173861).

68749369 is a wasteful number, since it uses less digits than its factorization.

68749369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841 (or 805 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 52.

The square root of 68749369 is about 8291.5239250695. The cubic root of 68749369 is about 409.6593819832.

The spelling of 68749369 in words is "sixty-eight million, seven hundred forty-nine thousand, three hundred sixty-nine".