6405730 has 16 divisors (see below), whose sum is σ = 12032064. Its totient is φ = 2450800.

The previous prime is 6405727. The next prime is 6405731. The reversal of 6405730 is 375046.

It is a junction number, because it is equal to n+sod(n) for n = 6405695 and 6405704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6405731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13696 + ... + 14155.

It is an arithmetic number, because the mean of its divisors is an integer number (752004).

Almost surely, 2^6405730 is an apocalyptic number.

6405730 is a deficient number, since it is larger than the sum of its proper divisors (5626334).

6405730 is a wasteful number, since it uses less digits than its factorization.

6405730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27881.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 6405730 is about 2530.9543654519. The cubic root of 6405730 is about 185.7189457833.

The spelling of 6405730 in words is "six million, four hundred five thousand, seven hundred thirty".