67671677 has 2 divisors, whose sum is σ = 67671678. Its totient is φ = 67671676.

The previous prime is 67671661. The next prime is 67671691. The reversal of 67671677 is 77617676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67551961 + 119716 = 8219^2 + 346^2 .

It is a cyclic number.

It is not a de Polignac number, because 67671677 - 2⁴ = 67671661 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67671277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33835838 + 33835839.

It is an arithmetic number, because the mean of its divisors is an integer number (33835839).

Almost surely, 2^67671677 is an apocalyptic number.

It is an amenable number.

67671677 is a deficient number, since it is larger than the sum of its proper divisors (1).

67671677 is an equidigital number, since it uses as much as digits as its factorization.

67671677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518616, while the sum is 47.

The square root of 67671677 is about 8226.2796572934. The cubic root of 67671677 is about 407.5075377180.

The spelling of 67671677 in words is "sixty-seven million, six hundred seventy-one thousand, six hundred seventy-seven".