67675661 has 4 divisors (see below), whose sum is σ = 67761372. Its totient is φ = 67589952.

The previous prime is 67675631. The next prime is 67675667. The reversal of 67675661 is 16657676.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22705225 + 44970436 = 4765^2 + 6706^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67675661 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 (67675667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41660 + ... + 43253.

It is an arithmetic number, because the mean of its divisors is an integer number (16940343).

Almost surely, 2^67675661 is an apocalyptic number.

It is an amenable number.

67675661 is a deficient number, since it is larger than the sum of its proper divisors (85711).

67675661 is an equidigital number, since it uses as much as digits as its factorization.

67675661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85710.

The product of its digits is 317520, while the sum is 44.

The square root of 67675661 is about 8226.5218045052. The cubic root of 67675661 is about 407.5155345553.

The spelling of 67675661 in words is "sixty-seven million, six hundred seventy-five thousand, six hundred sixty-one".