68436369 has 12 divisors (see below), whose sum is σ = 98936500. Its totient is φ = 45585504.

The previous prime is 68436343. The next prime is 68436383. The reversal of 68436369 is 96363486.

68436369 is a `hidden beast` number, since 6 + 8 + 4 + 3 + 636 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 51667344 + 16769025 = 7188^2 + 4095^2 .

It is not a de Polignac number, because 68436369 - 2⁵ = 68436337 is a prime.

It is a super-2 number, since 2×68436369² = 9367073203808322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68436469) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11487 + ... + 16395.

Almost surely, 2^68436369 is an apocalyptic number.

It is an amenable number.

68436369 is a deficient number, since it is larger than the sum of its proper divisors (30500131).

68436369 is a wasteful number, since it uses less digits than its factorization.

68436369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6464 (or 6461 counting only the distinct ones).

The product of its digits is 559872, while the sum is 45.

The square root of 68436369 is about 8272.6276962039. The cubic root of 68436369 is about 409.0367412589.

The spelling of 68436369 in words is "sixty-eight million, four hundred thirty-six thousand, three hundred sixty-nine".