7506666 has 12 divisors (see below), whose sum is σ = 16264482. Its totient is φ = 2502216.

The previous prime is 7506661. The next prime is 7506677. The reversal of 7506666 is 6666057.

It can be written as a sum of positive squares in only one way, i.e., 6734025 + 772641 = 2595^2 + 879^2 .

7506666 is a modest number, since divided by 6666 gives 750 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 7506666.

It is not an unprimeable number, because it can be changed into a prime (7506661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 208501 + ... + 208536.

Almost surely, 2^7506666 is an apocalyptic number.

7506666 is an abundant number, since it is smaller than the sum of its proper divisors (8757816).

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

7506666 is a wasteful number, since it uses less digits than its factorization.

7506666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417045 (or 417042 counting only the distinct ones).

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

The square root of 7506666 is about 2739.8295567425. The cubic root of 7506666 is about 195.8013571251.

The spelling of 7506666 in words is "seven million, five hundred six thousand, six hundred sixty-six".