6890740 has 24 divisors (see below), whose sum is σ = 14603400. Its totient is φ = 2731008.

The previous prime is 6890713. The next prime is 6890753. The reversal of 6890740 is 470986.

It can be written as a sum of positive squares in 4 ways, for example, as 357604 + 6533136 = 598^2 + 2556^2 .

It is a junction number, because it is equal to n+sod(n) for n = 6890696 and 6890705.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 736 + ... + 3784.

It is an arithmetic number, because the mean of its divisors is an integer number (608475).

Almost surely, 2^6890740 is an apocalyptic number.

It is an amenable number.

6890740 is an abundant number, since it is smaller than the sum of its proper divisors (7712660).

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

6890740 is a wasteful number, since it uses less digits than its factorization.

6890740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171 (or 3169 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 6890740 is about 2625.0219046705. The cubic root of 6890740 is about 190.2926238833.

The spelling of 6890740 in words is "six million, eight hundred ninety thousand, seven hundred forty".