67649685 has 16 divisors (see below), whose sum is σ = 110543616. Its totient is φ = 35311808.

The previous prime is 67649683. The next prime is 67649689. The reversal of 67649685 is 58694676.

It is a cyclic number.

It is not a de Polignac number, because 67649685 - 2¹ = 67649683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67649683) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 47274 + ... + 48683.

It is an arithmetic number, because the mean of its divisors is an integer number (6908976).

Almost surely, 2^67649685 is an apocalyptic number.

It is an amenable number.

67649685 is a deficient number, since it is larger than the sum of its proper divisors (42893931).

67649685 is a wasteful number, since it uses less digits than its factorization.

67649685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96012.

The product of its digits is 2177280, while the sum is 51.

The square root of 67649685 is about 8224.9428569444. The cubic root of 67649685 is about 407.4633888847.

The spelling of 67649685 in words is "sixty-seven million, six hundred forty-nine thousand, six hundred eighty-five".