7386661 has 4 divisors (see below), whose sum is σ = 7543872. Its totient is φ = 7229452.

The previous prime is 7386641. The next prime is 7386667. The reversal of 7386661 is 1666837.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1666837 = 359 ⋅4643.

It is a cyclic number.

It is not a de Polignac number, because 7386661 - 2⁹ = 7386149 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7386661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7386667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78535 + ... + 78628.

It is an arithmetic number, because the mean of its divisors is an integer number (1885968).

Almost surely, 2^7386661 is an apocalyptic number.

It is an amenable number.

7386661 is a deficient number, since it is larger than the sum of its proper divisors (157211).

7386661 is a wasteful number, since it uses less digits than its factorization.

7386661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157210.

The product of its digits is 36288, while the sum is 37.

The square root of 7386661 is about 2717.8412389247. The cubic root of 7386661 is about 194.7523571238.

The spelling of 7386661 in words is "seven million, three hundred eighty-six thousand, six hundred sixty-one".