7662416665 has 4 divisors (see below), whose sum is σ = 9194900004. Its totient is φ = 6129933328.

The previous prime is 7662416623. The next prime is 7662416669. The reversal of 7662416665 is 5666142667.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3451445001 + 4210971664 = 58749^2 + 64892^2 .

It is a cyclic number.

It is not a de Polignac number, because 7662416665 - 2¹³ = 7662408473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7662416669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 766241662 + ... + 766241671.

It is an arithmetic number, because the mean of its divisors is an integer number (2298725001).

Almost surely, 2^7662416665 is an apocalyptic number.

It is an amenable number.

7662416665 is a deficient number, since it is larger than the sum of its proper divisors (1532483339).

7662416665 is a wasteful number, since it uses less digits than its factorization.

7662416665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532483338.

The product of its digits is 2177280, while the sum is 49.

The square root of 7662416665 is about 87535.2309930122. The cubic root of 7662416665 is about 1971.4628063626.

The spelling of 7662416665 in words is "seven billion, six hundred sixty-two million, four hundred sixteen thousand, six hundred sixty-five".