7665742867 has 8 divisors (see below), whose sum is σ = 8123916816. Its totient is φ = 7208374272.

The previous prime is 7665742853. The next prime is 7665742871. The reversal of 7665742867 is 7682475667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7665742867 - 2²³ = 7657354259 is a prime.

It is a super-2 number, since 2×7665742867² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7665742897) 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 7 ways as a sum of consecutive naturals, for example, 181678 + ... + 219859.

It is an arithmetic number, because the mean of its divisors is an integer number (1015489602).

Almost surely, 2^7665742867 is an apocalyptic number.

7665742867 is a deficient number, since it is larger than the sum of its proper divisors (458173949).

7665742867 is a wasteful number, since it uses less digits than its factorization.

7665742867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402677.

The product of its digits is 23708160, while the sum is 58.

The square root of 7665742867 is about 87554.2281503298. The cubic root of 7665742867 is about 1971.7480312114.

The spelling of 7665742867 in words is "seven billion, six hundred sixty-five million, seven hundred forty-two thousand, eight hundred sixty-seven".