67190661 has 16 divisors (see below), whose sum is σ = 99985600. Its totient is φ = 44594064.

The previous prime is 67190657. The next prime is 67190663. The reversal of 67190661 is 16609176.

It is not a de Polignac number, because 67190661 - 2² = 67190657 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67190663) 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 in 15 ways as a sum of consecutive naturals, for example, 750 + ... + 11616.

It is an arithmetic number, because the mean of its divisors is an integer number (6249100).

Almost surely, 2^67190661 is an apocalyptic number.

It is an amenable number.

67190661 is a deficient number, since it is larger than the sum of its proper divisors (32794939).

67190661 is a wasteful number, since it uses less digits than its factorization.

67190661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11105 (or 11099 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 67190661 is about 8196.9909723020. The cubic root of 67190661 is about 406.5397082709.

The spelling of 67190661 in words is "sixty-seven million, one hundred ninety thousand, six hundred sixty-one".