6402783 has 4 divisors (see below), whose sum is σ = 8537048. Its totient is φ = 4268520.

The previous prime is 6402779. The next prime is 6402787. The reversal of 6402783 is 3872046.

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

It is an interprime number because it is at equal distance from previous prime (6402779) and next prime (6402787).

It is not a de Polignac number, because 6402783 - 2² = 6402779 is a prime.

It is a D-number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6402783.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6402787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1067128 + ... + 1067133.

It is an arithmetic number, because the mean of its divisors is an integer number (2134262).

Almost surely, 2^6402783 is an apocalyptic number.

6402783 is a deficient number, since it is larger than the sum of its proper divisors (2134265).

6402783 is a wasteful number, since it uses less digits than its factorization.

6402783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134264.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 6402783 is about 2530.3721070230. The cubic root of 6402783 is about 185.6904609899.

The spelling of 6402783 in words is "six million, four hundred two thousand, seven hundred eighty-three".