67654567345 has 4 divisors (see below), whose sum is σ = 81185480820. Its totient is φ = 54123653872.

The previous prime is 67654567297. The next prime is 67654567373. The reversal of 67654567345 is 54376545676.

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 49298653089 + 18355914256 = 222033^2 + 135484^2 .

It is a cyclic number.

It is not a de Polignac number, because 67654567345 - 2¹³ = 67654559153 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67654567345.

It is an unprimeable number.

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, 6765456730 + ... + 6765456739.

It is an arithmetic number, because the mean of its divisors is an integer number (20296370205).

Almost surely, 2^67654567345 is an apocalyptic number.

It is an amenable number.

67654567345 is a deficient number, since it is larger than the sum of its proper divisors (13530913475).

67654567345 is a wasteful number, since it uses less digits than its factorization.

67654567345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13530913474.

The product of its digits is 63504000, while the sum is 58.

The spelling of 67654567345 in words is "sixty-seven billion, six hundred fifty-four million, five hundred sixty-seven thousand, three hundred forty-five".