61667 has 2 divisors, whose sum is σ = 61668. Its totient is φ = 61666.

The previous prime is 61657. The next prime is 61673. The reversal of 61667 is 76616.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61667 - 2⁴ = 61651 is a prime.

It is a Chen prime.

It is a zygodrome in base 2.

It is not a weakly prime, because it can be changed into another prime (61627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30833 + 30834.

It is an arithmetic number, because the mean of its divisors is an integer number (30834).

2⁶¹⁶⁶⁷ is an apocalyptic number.

61667 is a deficient number, since it is larger than the sum of its proper divisors (1).

61667 is an equidigital number, since it uses as much as digits as its factorization.

61667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 26.

The square root of 61667 is about 248.3284115843. The cubic root of 61667 is about 39.5079298292.

The spelling of 61667 in words is "sixty-one thousand, six hundred sixty-seven".