7666393 has 20 divisors (see below), whose sum is σ = 9321728. Its totient is φ = 6297480.

The previous prime is 7666381. The next prime is 7666409. The reversal of 7666393 is 3936667.

It is not a de Polignac number, because 7666393 - 2⁹ = 7665881 is a prime.

It is a Duffinian number.

Its product of digits (122472) is a multiple of the sum of its prime factors (162).

It is not an unprimeable number, because it can be changed into a prime (7666313) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 74380 + ... + 74482.

Almost surely, 2^7666393 is an apocalyptic number.

It is an amenable number.

7666393 is a deficient number, since it is larger than the sum of its proper divisors (1655335).

7666393 is an equidigital number, since it uses as much as digits as its factorization.

7666393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 141 counting only the distinct ones).

The product of its digits is 122472, while the sum is 40.

The square root of 7666393 is about 2768.8252021390. The cubic root of 7666393 is about 197.1803771068.

The spelling of 7666393 in words is "seven million, six hundred sixty-six thousand, three hundred ninety-three".