7959666 has 32 divisors (see below), whose sum is σ = 18704448. Its totient is φ = 2226240.

The previous prime is 7959661. The next prime is 7959673. The reversal of 7959666 is 6669597.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7959661) 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 15 ways as a sum of consecutive naturals, for example, 3781 + ... + 5496.

It is an arithmetic number, because the mean of its divisors is an integer number (584514).

Almost surely, 2^7959666 is an apocalyptic number.

7959666 is an abundant number, since it is smaller than the sum of its proper divisors (10744782).

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

7959666 is a wasteful number, since it uses less digits than its factorization.

7959666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9306.

The product of its digits is 612360, while the sum is 48.

The square root of 7959666 is about 2821.2880037316. The cubic root of 7959666 is about 199.6633168737.

The spelling of 7959666 in words is "seven million, nine hundred fifty-nine thousand, six hundred sixty-six".