7004405 has 4 divisors (see below), whose sum is σ = 8405292. Its totient is φ = 5603520.

The previous prime is 7004401. The next prime is 7004429. The reversal of 7004405 is 5044007.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4318084 + 2686321 = 2078^2 + 1639^2 .

It is not a de Polignac number, because 7004405 - 2² = 7004401 is a prime.

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 (7004401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700436 + ... + 700445.

It is an arithmetic number, because the mean of its divisors is an integer number (2101323).

Almost surely, 2^7004405 is an apocalyptic number.

It is an amenable number.

7004405 is a deficient number, since it is larger than the sum of its proper divisors (1400887).

7004405 is a wasteful number, since it uses less digits than its factorization.

7004405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1400886.

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 7004405 is about 2646.5836468927. The cubic root of 7004405 is about 191.3332358721. Note that the first 3 decimals are identical.

The spelling of 7004405 in words is "seven million, four thousand, four hundred five".