6840136 has 24 divisors (see below), whose sum is σ = 13084470. Its totient is φ = 3352128.

The previous prime is 6840109. The next prime is 6840157. The reversal of 6840136 is 6310486.

It can be written as a sum of positive squares in only one way, i.e., 5616900 + 1223236 = 2370^2 + 1106^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 49860 + ... + 49996.

Almost surely, 2^6840136 is an apocalyptic number.

It is an amenable number.

6840136 is a deficient number, since it is larger than the sum of its proper divisors (6244334).

6840136 is a wasteful number, since it uses less digits than its factorization.

6840136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 6840136 is about 2615.3653664450. The cubic root of 6840136 is about 189.8256572477.

It can be divided in two parts, 68 and 40136, that added together give a palindrome (40204).

The spelling of 6840136 in words is "six million, eight hundred forty thousand, one hundred thirty-six".