7090805 has 4 divisors (see below), whose sum is σ = 8508972. Its totient is φ = 5672640.

The previous prime is 7090801. The next prime is 7090813. The reversal of 7090805 is 5080907.

It is a happy number.

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 3118756 + 3972049 = 1766^2 + 1993^2 .

It is not a de Polignac number, because 7090805 - 2² = 7090801 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7090801) 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, 709076 + ... + 709085.

It is an arithmetic number, because the mean of its divisors is an integer number (2127243).

Almost surely, 2^7090805 is an apocalyptic number.

It is an amenable number.

7090805 is a deficient number, since it is larger than the sum of its proper divisors (1418167).

7090805 is a wasteful number, since it uses less digits than its factorization.

7090805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418166.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 7090805 is about 2662.8565488963. The cubic root of 7090805 is about 192.1167277037.

The spelling of 7090805 in words is "seven million, ninety thousand, eight hundred five".