67646164 has 12 divisors (see below), whose sum is σ = 119553588. Its totient is φ = 33488000.

The previous prime is 67646147. The next prime is 67646171. The reversal of 67646164 is 46164676.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 63202500 + 4443664 = 7950^2 + 2108^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83317 + ... + 84124.

It is an arithmetic number, because the mean of its divisors is an integer number (9962799).

Almost surely, 2^67646164 is an apocalyptic number.

It is an amenable number.

67646164 is a deficient number, since it is larger than the sum of its proper divisors (51907424).

67646164 is a wasteful number, since it uses less digits than its factorization.

67646164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167546 (or 167544 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The square root of 67646164 is about 8224.7288101189. The cubic root of 67646164 is about 407.4563196057.

The spelling of 67646164 in words is "sixty-seven million, six hundred forty-six thousand, one hundred sixty-four".