67130530 has 16 divisors (see below), whose sum is σ = 123782904. Its totient is φ = 26197120.

The previous prime is 67130521. The next prime is 67130551. The reversal of 67130530 is 3503176.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 49716601 + 17413929 = 7051^2 + 4173^2 .

It is a junction number, because it is equal to n+sod(n) for n = 67130495 and 67130504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81457 + ... + 82276.

Almost surely, 2^67130530 is an apocalyptic number.

67130530 is a deficient number, since it is larger than the sum of its proper divisors (56652374).

67130530 is a wasteful number, since it uses less digits than its factorization.

67130530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163781.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 67130530 is about 8193.3222809798. The cubic root of 67130530 is about 406.4183970904.

The spelling of 67130530 in words is "sixty-seven million, one hundred thirty thousand, five hundred thirty".