67066730 has 16 divisors (see below), whose sum is σ = 122998824. Its totient is φ = 26320320.

The previous prime is 67066729. The next prime is 67066757. The reversal of 67066730 is 3766076.

It can be written as a sum of positive squares in 4 ways, for example, as 66863329 + 203401 = 8177^2 + 451^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62741 + ... + 63800.

Almost surely, 2^67066730 is an apocalyptic number.

67066730 is a deficient number, since it is larger than the sum of its proper divisors (55932094).

67066730 is a wasteful number, since it uses less digits than its factorization.

67066730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126601.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 67066730 is about 8189.4279409492. The cubic root of 67066730 is about 406.2896046596.

The spelling of 67066730 in words is "sixty-seven million, sixty-six thousand, seven hundred thirty".