7566442 has 16 divisors (see below), whose sum is σ = 12285000. Its totient is φ = 3474432.

The previous prime is 7566431. The next prime is 7566443. The reversal of 7566442 is 2446657.

It can be written as a sum of positive squares in 4 ways, for example, as 3728761 + 3837681 = 1931^2 + 1959^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7566398 and 7566407.

It is not an unprimeable number, because it can be changed into a prime (7566443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5434 + ... + 6682.

Almost surely, 2^7566442 is an apocalyptic number.

7566442 is a deficient number, since it is larger than the sum of its proper divisors (4718558).

7566442 is a wasteful number, since it uses less digits than its factorization.

7566442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497.

The product of its digits is 40320, while the sum is 34.

The square root of 7566442 is about 2750.7166338974. The cubic root of 7566442 is about 196.3197093697.

It can be divided in two parts, 7566 and 442, that added together give a palindrome (8008).

The spelling of 7566442 in words is "seven million, five hundred sixty-six thousand, four hundred forty-two".