6405755 has 8 divisors (see below), whose sum is σ = 8091600. Its totient is φ = 4854816.

The previous prime is 6405743. The next prime is 6405761. The reversal of 6405755 is 5575046.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6405755 - 2¹⁴ = 6389371 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33620 + ... + 33809.

It is an arithmetic number, because the mean of its divisors is an integer number (1011450).

Almost surely, 2^6405755 is an apocalyptic number.

6405755 is a deficient number, since it is larger than the sum of its proper divisors (1685845).

6405755 is a wasteful number, since it uses less digits than its factorization.

6405755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67453.

The product of its (nonzero) digits is 21000, while the sum is 32.

The square root of 6405755 is about 2530.9593042955. The cubic root of 6405755 is about 185.7191873882.

The spelling of 6405755 in words is "six million, four hundred five thousand, seven hundred fifty-five".