6726678065 has 24 divisors (see below), whose sum is σ = 8831543400. Its totient is φ = 4901352960.

The previous prime is 6726678047. The next prime is 6726678083. The reversal of 6726678065 is 5608766276.

It is an interprime number because it is at equal distance from previous prime (6726678047) and next prime (6726678083).

It can be written as a sum of positive squares in 4 ways, for example, as 1973402929 + 4753275136 = 44423^2 + 68944^2 .

It is not a de Polignac number, because 6726678065 - 2¹⁴ = 6726661681 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6726677998 and 6726678016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40511 + ... + 122859.

It is an arithmetic number, because the mean of its divisors is an integer number (367980975).

Almost surely, 2^6726678065 is an apocalyptic number.

It is an amenable number.

6726678065 is a deficient number, since it is larger than the sum of its proper divisors (2104865335).

6726678065 is a wasteful number, since it uses less digits than its factorization.

6726678065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82433 (or 82402 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 53.

The square root of 6726678065 is about 82016.3280389948. The cubic root of 6726678065 is about 1887.7024857110.

The spelling of 6726678065 in words is "six billion, seven hundred twenty-six million, six hundred seventy-eight thousand, sixty-five".