7000405 has 4 divisors (see below), whose sum is σ = 8400492. Its totient is φ = 5600320.

The previous prime is 7000391. The next prime is 7000429. The reversal of 7000405 is 5040007.

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 938961 + 6061444 = 969^2 + 2462^2 .

It is not a de Polignac number, because 7000405 - 2⁵ = 7000373 is a prime.

It is a super-3 number, since 3×7000405³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 700036 + ... + 700045.

It is an arithmetic number, because the mean of its divisors is an integer number (2100123).

Almost surely, 2^7000405 is an apocalyptic number.

It is an amenable number.

7000405 is a deficient number, since it is larger than the sum of its proper divisors (1400087).

7000405 is a wasteful number, since it uses less digits than its factorization.

7000405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400086.

The product of its (nonzero) digits is 140, while the sum is 16.

The square root of 7000405 is about 2645.8278477633. The cubic root of 7000405 is about 191.2968074305.

The spelling of 7000405 in words is "seven million, four hundred five", and thus it is an aban number.