67961863 has 2 divisors, whose sum is σ = 67961864. Its totient is φ = 67961862.

The previous prime is 67961857. The next prime is 67961893. The reversal of 67961863 is 36816976.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67961863 - 2⁹ = 67961351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67961813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33980931 + 33980932.

It is an arithmetic number, because the mean of its divisors is an integer number (33980932).

Almost surely, 2^67961863 is an apocalyptic number.

67961863 is a deficient number, since it is larger than the sum of its proper divisors (1).

67961863 is an equidigital number, since it uses as much as digits as its factorization.

67961863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 46.

The square root of 67961863 is about 8243.8985316414. The cubic root of 67961863 is about 408.0891909809.

The spelling of 67961863 in words is "sixty-seven million, nine hundred sixty-one thousand, eight hundred sixty-three".