7666481 has 4 divisors (see below), whose sum is σ = 8070000. Its totient is φ = 7262964.

The previous prime is 7666459. The next prime is 7666487. The reversal of 7666481 is 1846667.

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.

It is a cyclic number.

It is not a de Polignac number, because 7666481 - 2¹⁸ = 7404337 is a prime.

It is a super-2 number, since 2×7666481² = 117549861846722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7666487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201731 + ... + 201768.

It is an arithmetic number, because the mean of its divisors is an integer number (2017500).

Almost surely, 2^7666481 is an apocalyptic number.

It is an amenable number.

7666481 is a deficient number, since it is larger than the sum of its proper divisors (403519).

7666481 is a wasteful number, since it uses less digits than its factorization.

7666481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403518.

The product of its digits is 48384, while the sum is 38.

The square root of 7666481 is about 2768.8410933096. The cubic root of 7666481 is about 197.1811315601.

The spelling of 7666481 in words is "seven million, six hundred sixty-six thousand, four hundred eighty-one".