7818073 has 4 divisors (see below), whose sum is σ = 7826688. Its totient is φ = 7809460.

The previous prime is 7818071. The next prime is 7818127. The reversal of 7818073 is 3708187.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3708187 = 7 ⋅529741.

It is a cyclic number.

It is not a de Polignac number, because 7818073 - 2¹ = 7818071 is a prime.

It is a super-2 number, since 2×7818073² = 122244530866658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7818071) 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, 2761 + ... + 4822.

It is an arithmetic number, because the mean of its divisors is an integer number (1956672).

Almost surely, 2^7818073 is an apocalyptic number.

It is an amenable number.

7818073 is a deficient number, since it is larger than the sum of its proper divisors (8615).

7818073 is a wasteful number, since it uses less digits than its factorization.

7818073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8614.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 7818073 is about 2796.0817226970. The cubic root of 7818073 is about 198.4723020739.

The spelling of 7818073 in words is "seven million, eight hundred eighteen thousand, seventy-three".