66167741 has 2 divisors, whose sum is σ = 66167742. Its totient is φ = 66167740.

The previous prime is 66167693. The next prime is 66167767. The reversal of 66167741 is 14776166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65772100 + 395641 = 8110^2 + 629^2 .

It is a cyclic number.

It is not a de Polignac number, because 66167741 - 2¹⁴ = 66151357 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 66167695 and 66167704.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66167041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33083870 + 33083871.

It is an arithmetic number, because the mean of its divisors is an integer number (33083871).

Almost surely, 2^66167741 is an apocalyptic number.

It is an amenable number.

66167741 is a deficient number, since it is larger than the sum of its proper divisors (1).

66167741 is an equidigital number, since it uses as much as digits as its factorization.

66167741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42336, while the sum is 38.

The square root of 66167741 is about 8134.3555983249. The cubic root of 66167741 is about 404.4660768936.

The spelling of 66167741 in words is "sixty-six million, one hundred sixty-seven thousand, seven hundred forty-one".