67669 has 6 divisors (see below), whose sum is σ = 78774. Its totient is φ = 57960.

The previous prime is 67651. The next prime is 67679. The reversal of 67669 is 96676.

It can be written as a sum of positive squares in only one way, i.e., 56644 + 11025 = 238^2 + 105^2 .

It is not a de Polignac number, because 67669 - 2⁹ = 67157 is a prime.

It is a super-2 number, since 2×67669² = 9158187122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67619) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 642 + ... + 739.

It is an arithmetic number, because the mean of its divisors is an integer number (13129).

2⁶⁷⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

67669 is a deficient number, since it is larger than the sum of its proper divisors (11105).

67669 is a wasteful number, since it uses less digits than its factorization.

67669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395 (or 1388 counting only the distinct ones).

The product of its digits is 13608, while the sum is 34.

The square root of 67669 is about 260.1326584649. The cubic root of 67669 is about 40.7502164165.

The spelling of 67669 in words is "sixty-seven thousand, six hundred sixty-nine".