67698893 has 2 divisors, whose sum is σ = 67698894. Its totient is φ = 67698892.

The previous prime is 67698889. The next prime is 67698949. The reversal of 67698893 is 39889676.

It is an a-pointer prime, because the next prime (67698949) can be obtained adding 67698893 to its sum of digits (56).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62694724 + 5004169 = 7918^2 + 2237^2 .

It is a cyclic number.

It is not a de Polignac number, because 67698893 - 2² = 67698889 is a prime.

It is a super-2 number, since 2×67698893² = 9166280226850898, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67692893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33849446 + 33849447.

It is an arithmetic number, because the mean of its divisors is an integer number (33849447).

Almost surely, 2^67698893 is an apocalyptic number.

It is an amenable number.

67698893 is a deficient number, since it is larger than the sum of its proper divisors (1).

67698893 is an equidigital number, since it uses as much as digits as its factorization.

67698893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3919104, while the sum is 56.

The square root of 67698893 is about 8227.9337017261. The cubic root of 67698893 is about 407.5621604649.

The spelling of 67698893 in words is "sixty-seven million, six hundred ninety-eight thousand, eight hundred ninety-three".