6402261 has 4 divisors (see below), whose sum is σ = 8536352. Its totient is φ = 4268172.

The previous prime is 6402247. The next prime is 6402269. The reversal of 6402261 is 1622046.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6402261 - 2⁹ = 6401749 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6402269) 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, 1067041 + ... + 1067046.

It is an arithmetic number, because the mean of its divisors is an integer number (2134088).

Almost surely, 2^6402261 is an apocalyptic number.

It is an amenable number.

6402261 is a deficient number, since it is larger than the sum of its proper divisors (2134091).

6402261 is a wasteful number, since it uses less digits than its factorization.

6402261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2134090.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 6402261 is about 2530.2689580359. The cubic root of 6402261 is about 185.6854145877.

The spelling of 6402261 in words is "six million, four hundred two thousand, two hundred sixty-one".