67651697 has 2 divisors, whose sum is σ = 67651698. Its totient is φ = 67651696.

The previous prime is 67651673. The next prime is 67651741. The reversal of 67651697 is 79615676.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50751376 + 16900321 = 7124^2 + 4111^2 .

It is a cyclic number.

It is not a de Polignac number, because 67651697 - 2¹⁴ = 67635313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (67651607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33825848 + 33825849.

It is an arithmetic number, because the mean of its divisors is an integer number (33825849).

Almost surely, 2^67651697 is an apocalyptic number.

It is an amenable number.

67651697 is a deficient number, since it is larger than the sum of its proper divisors (1).

67651697 is an equidigital number, since it uses as much as digits as its factorization.

67651697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 47.

The square root of 67651697 is about 8225.0651669151. The cubic root of 67651697 is about 407.4674283625.

The spelling of 67651697 in words is "sixty-seven million, six hundred fifty-one thousand, six hundred ninety-seven".