7650666 has 16 divisors (see below), whose sum is σ = 17001600. Its totient is φ = 2550204.

The previous prime is 7650653. The next prime is 7650683. The reversal of 7650666 is 6660567.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7650666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70786 + ... + 70893.

It is an arithmetic number, because the mean of its divisors is an integer number (1062600).

Almost surely, 2^7650666 is an apocalyptic number.

7650666 is an abundant number, since it is smaller than the sum of its proper divisors (9350934).

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

7650666 is a wasteful number, since it uses less digits than its factorization.

7650666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141690 (or 141684 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 7650666 is about 2765.9837309717. The cubic root of 7650666 is about 197.0454514760.

Subtracting from 7650666 its reverse (6660567), we obtain a palindrome (990099).

The spelling of 7650666 in words is "seven million, six hundred fifty thousand, six hundred sixty-six".