7407666 has 32 divisors (see below), whose sum is σ = 18814080. Its totient is φ = 2116368.

The previous prime is 7407661. The next prime is 7407671. The reversal of 7407666 is 6667047.

It is an interprime number because it is at equal distance from previous prime (7407661) and next prime (7407671).

It is a self number, because there is not a number n which added to its sum of digits gives 7407666.

It is not an unprimeable number, because it can be changed into a prime (7407661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9421 + ... + 10176.

It is an arithmetic number, because the mean of its divisors is an integer number (587940).

Almost surely, 2^7407666 is an apocalyptic number.

7407666 is an abundant number, since it is smaller than the sum of its proper divisors (11406414).

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

7407666 is a wasteful number, since it uses less digits than its factorization.

7407666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19615 (or 19609 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 7407666 is about 2721.7027758372. The cubic root of 7407666 is about 194.9367842424.

The spelling of 7407666 in words is "seven million, four hundred seven thousand, six hundred sixty-six".