67662073 has 2 divisors, whose sum is σ = 67662074. Its totient is φ = 67662072.

The previous prime is 67662041. The next prime is 67662107. The reversal of 67662073 is 37026676.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42341049 + 25321024 = 6507^2 + 5032^2 .

It is a cyclic number.

It is not a de Polignac number, because 67662073 - 2⁵ = 67662041 is a prime.

It is a super-2 number, since 2×67662073² = 9156312245314658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67662373) 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 as a sum of consecutive naturals, namely, 33831036 + 33831037.

It is an arithmetic number, because the mean of its divisors is an integer number (33831037).

Almost surely, 2^67662073 is an apocalyptic number.

It is an amenable number.

67662073 is a deficient number, since it is larger than the sum of its proper divisors (1).

67662073 is an equidigital number, since it uses as much as digits as its factorization.

67662073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 37.

The square root of 67662073 is about 8225.6958976126. The cubic root of 67662073 is about 407.4882589112.

The spelling of 67662073 in words is "sixty-seven million, six hundred sixty-two thousand, seventy-three".