67690 has 16 divisors (see below), whose sum is σ = 139392. Its totient is φ = 23184.

The previous prime is 67679. The next prime is 67699. The reversal of 67690 is 9676.

67690 = 35² + 36² + ... + 62².

It is a super-2 number, since 2×67690² = 9163872200, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (67699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 414 + ... + 553.

It is an arithmetic number, because the mean of its divisors is an integer number (8712).

2⁶⁷⁶⁹⁰ is an apocalyptic number.

67690 is an abundant number, since it is smaller than the sum of its proper divisors (71702).

It is a weird number, because it is abundant, but not a pseudoperfect number.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69696).

67690 is a wasteful number, since it uses less digits than its factorization.

67690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 67690 is about 260.1730193544. The cubic root of 67690 is about 40.7544313748.

It can be divided in two parts, 67 and 690, that added together give a palindrome (757).

The spelling of 67690 in words is "sixty-seven thousand, six hundred ninety".