6840738 has 12 divisors (see below), whose sum is σ = 14821638. Its totient is φ = 2280240.

The previous prime is 6840737. The next prime is 6840761. The reversal of 6840738 is 8370486.

It can be written as a sum of positive squares in only one way, i.e., 6640929 + 199809 = 2577^2 + 447^2 .

It is not an unprimeable number, because it can be changed into a prime (6840737) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 190003 + ... + 190038.

Almost surely, 2^6840738 is an apocalyptic number.

6840738 is an abundant number, since it is smaller than the sum of its proper divisors (7980900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6840738 is a wasteful number, since it uses less digits than its factorization.

6840738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380049 (or 380046 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 6840738 is about 2615.4804529952. The cubic root of 6840738 is about 189.8312259329.

The spelling of 6840738 in words is "six million, eight hundred forty thousand, seven hundred thirty-eight".