6407740 has 12 divisors (see below), whose sum is σ = 13456296. Its totient is φ = 2563088.

The previous prime is 6407701. The next prime is 6407741. The reversal of 6407740 is 477046.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 6407699 and 6407708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6407741) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 160174 + ... + 160213.

It is an arithmetic number, because the mean of its divisors is an integer number (1121358).

Almost surely, 2^6407740 is an apocalyptic number.

It is an amenable number.

6407740 is an abundant number, since it is smaller than the sum of its proper divisors (7048556).

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

6407740 is a wasteful number, since it uses less digits than its factorization.

6407740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320396 (or 320394 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 6407740 is about 2531.3514177214. The cubic root of 6407740 is about 185.7383688126.

The spelling of 6407740 in words is "six million, four hundred seven thousand, seven hundred forty".