6404002 has 16 divisors (see below), whose sum is σ = 11096352. Its totient is φ = 2739520.

The previous prime is 6403993. The next prime is 6404003. The reversal of 6404002 is 2004046.

It is a super-2 number, since 2×6404002² = 82022483232008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6404003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8188 + ... + 8935.

It is an arithmetic number, because the mean of its divisors is an integer number (693522).

Almost surely, 2^6404002 is an apocalyptic number.

6404002 is a deficient number, since it is larger than the sum of its proper divisors (4692350).

6404002 is a wasteful number, since it uses less digits than its factorization.

6404002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17153.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 6404002 is about 2530.6129692231. The cubic root of 6404002 is about 185.7022445278.

Adding to 6404002 its reverse (2004046), we get a palindrome (8408048).

It can be divided in two parts, 640400 and 2, that multiplied together give a triangular number (1280800 = T₁₆₀₀).

The spelling of 6404002 in words is "six million, four hundred four thousand, two".