7061818 has 4 divisors (see below), whose sum is σ = 10592730. Its totient is φ = 3530908.

The previous prime is 7061807. The next prime is 7061827. The reversal of 7061818 is 8181607.

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

It can be written as a sum of positive squares in only one way, i.e., 7038409 + 23409 = 2653^2 + 153^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

7061818 is a modest number, since divided by 1818 gives 706 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 7061818.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1765453 + ... + 1765456.

Almost surely, 2^7061818 is an apocalyptic number.

7061818 is a deficient number, since it is larger than the sum of its proper divisors (3530912).

7061818 is a wasteful number, since it uses less digits than its factorization.

7061818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3530911.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 7061818 is about 2657.4081357594. The cubic root of 7061818 is about 191.8545810057.

The spelling of 7061818 in words is "seven million, sixty-one thousand, eight hundred eighteen".