6402761 has 4 divisors (see below), whose sum is σ = 6779412. Its totient is φ = 6026112.

The previous prime is 6402751. The next prime is 6402779. The reversal of 6402761 is 1672046.

6402761 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2175625 + 4227136 = 1475^2 + 2056^2 .

It is a cyclic number.

It is not a de Polignac number, because 6402761 - 2¹⁴ = 6386377 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6402761.

It is not an unprimeable number, because it can be changed into a prime (6402701) 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, 188300 + ... + 188333.

It is an arithmetic number, because the mean of its divisors is an integer number (1694853).

Almost surely, 2^6402761 is an apocalyptic number.

It is an amenable number.

6402761 is a deficient number, since it is larger than the sum of its proper divisors (376651).

6402761 is a wasteful number, since it uses less digits than its factorization.

6402761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376650.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 6402761 is about 2530.3677598326. The cubic root of 6402761 is about 185.6902483119.

The spelling of 6402761 in words is "six million, four hundred two thousand, seven hundred sixty-one".