6404045 has 8 divisors (see below), whose sum is σ = 8089440. Its totient is φ = 4853520.

The previous prime is 6404023. The next prime is 6404059. The reversal of 6404045 is 5404046.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6404045 - 2⁶ = 6403981 is a prime.

It is an Ulam 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 6404045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33611 + ... + 33800.

It is an arithmetic number, because the mean of its divisors is an integer number (1011180).

Almost surely, 2^6404045 is an apocalyptic number.

It is an amenable number.

6404045 is a deficient number, since it is larger than the sum of its proper divisors (1685395).

6404045 is a wasteful number, since it uses less digits than its factorization.

6404045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67435.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 6404045 is about 2530.6214651741. The cubic root of 6404045 is about 185.7026601627.

Subtracting from 6404045 its reverse (5404046), we obtain a palindrome (999999).

The spelling of 6404045 in words is "six million, four hundred four thousand, forty-five".