67575555 has 12 divisors (see below), whose sum is σ = 117131040. Its totient is φ = 36040272.

The previous prime is 67575553. The next prime is 67575559. The reversal of 67575555 is 55557576.

It is not a de Polignac number, because 67575555 - 2¹ = 67575553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1501679 = 67575555 / (6 + 7 + 5 + 7 + 5 + 5 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 67575555.

It is not an unprimeable number, because it can be changed into a prime (67575553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 750795 + ... + 750884.

It is an arithmetic number, because the mean of its divisors is an integer number (9760920).

Almost surely, 2^67575555 is an apocalyptic number.

67575555 is a deficient number, since it is larger than the sum of its proper divisors (49555485).

67575555 is a wasteful number, since it uses less digits than its factorization.

67575555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501690 (or 1501687 counting only the distinct ones).

The product of its digits is 918750, while the sum is 45.

The square root of 67575555 is about 8220.4352074571. The cubic root of 67575555 is about 407.3145027485.

The spelling of 67575555 in words is "sixty-seven million, five hundred seventy-five thousand, five hundred fifty-five".