7622686865 has 16 divisors (see below), whose sum is σ = 9687450960. Its totient is φ = 5738158080.

The previous prime is 7622686843. The next prime is 7622686871. The reversal of 7622686865 is 5686862267.

It is a Cunningham number, because it is equal to 87308²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 178275904 + 7444410961 = 13352^2 + 86281^2 .

It is not a de Polignac number, because 7622686865 - 2¹⁴ = 7622670481 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7622686865.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574931 + ... + 588039.

It is an arithmetic number, because the mean of its divisors is an integer number (605465685).

Almost surely, 2^7622686865 is an apocalyptic number.

It is an amenable number.

7622686865 is a deficient number, since it is larger than the sum of its proper divisors (2064764095).

7622686865 is a wasteful number, since it uses less digits than its factorization.

7622686865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19972.

The product of its digits is 11612160, while the sum is 56.

The square root of 7622686865 is about 87308.0000057269. Note that the first 5 decimals coincide. The cubic root of 7622686865 is about 1968.0495408334.

The spelling of 7622686865 in words is "seven billion, six hundred twenty-two million, six hundred eighty-six thousand, eight hundred sixty-five".