6402023 has 4 divisors (see below), whose sum is σ = 6425088. Its totient is φ = 6378960.

The previous prime is 6402007. The next prime is 6402041. The reversal of 6402023 is 3202046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3202046 = 2 ⋅1601023.

It is a cyclic number.

It is not a de Polignac number, because 6402023 - 2⁴ = 6402007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6401992 and 6402010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6402323) 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, 11111 + ... + 11672.

It is an arithmetic number, because the mean of its divisors is an integer number (1606272).

Almost surely, 2^6402023 is an apocalyptic number.

6402023 is a deficient number, since it is larger than the sum of its proper divisors (23065).

6402023 is a wasteful number, since it uses less digits than its factorization.

6402023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23064.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 6402023 is about 2530.2219270254. The cubic root of 6402023 is about 185.6831136466.

Adding to 6402023 its reverse (3202046), we get a palindrome (9604069).

The spelling of 6402023 in words is "six million, four hundred two thousand, twenty-three".