7566642 has 16 divisors (see below), whose sum is σ = 16814880. Its totient is φ = 2522196.

The previous prime is 7566641. The next prime is 7566659. The reversal of 7566642 is 2466657.

It is a junction number, because it is equal to n+sod(n) for n = 7566597 and 7566606.

It is not an unprimeable number, because it can be changed into a prime (7566641) 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, 70008 + ... + 70115.

It is an arithmetic number, because the mean of its divisors is an integer number (1050930).

Almost surely, 2^7566642 is an apocalyptic number.

7566642 is an abundant number, since it is smaller than the sum of its proper divisors (9248238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7566642 is a wasteful number, since it uses less digits than its factorization.

7566642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140134 (or 140128 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 7566642 is about 2750.7529878199. The cubic root of 7566642 is about 196.3214390949.

The spelling of 7566642 in words is "seven million, five hundred sixty-six thousand, six hundred forty-two".