7420066 has 16 divisors (see below), whose sum is σ = 11377080. Its totient is φ = 3628800.

The previous prime is 7420043. The next prime is 7420069. The reversal of 7420066 is 6600247.

It can be written as a sum of positive squares in 4 ways, for example, as 7317025 + 103041 = 2705^2 + 321^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7420066.

It is not an unprimeable number, because it can be changed into a prime (7420069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21850 + ... + 22186.

Almost surely, 2^7420066 is an apocalyptic number.

7420066 is a deficient number, since it is larger than the sum of its proper divisors (3957014).

7420066 is a wasteful number, since it uses less digits than its factorization.

7420066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 7420066 is about 2723.9798090294. The cubic root of 7420066 is about 195.0454945352.

The spelling of 7420066 in words is "seven million, four hundred twenty thousand, sixty-six".