7047813 has 4 divisors (see below), whose sum is σ = 9397088. Its totient is φ = 4698540.

The previous prime is 7047787. The next prime is 7047823. The reversal of 7047813 is 3187407.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3187407 = 3 ⋅1062469.

It is not a de Polignac number, because 7047813 - 2⁶ = 7047749 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 (7047823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1174633 + ... + 1174638.

It is an arithmetic number, because the mean of its divisors is an integer number (2349272).

Almost surely, 2^7047813 is an apocalyptic number.

It is an amenable number.

7047813 is a deficient number, since it is larger than the sum of its proper divisors (2349275).

7047813 is a wasteful number, since it uses less digits than its factorization.

7047813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2349274.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 7047813 is about 2654.7717416004. The cubic root of 7047813 is about 191.7276683796.

The spelling of 7047813 in words is "seven million, forty-seven thousand, eight hundred thirteen".