67698949 has 2 divisors, whose sum is σ = 67698950. Its totient is φ = 67698948.

The previous prime is 67698893. The next prime is 67698979. The reversal of 67698949 is 94989676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67404100 + 294849 = 8210^2 + 543^2 .

It is a cyclic number.

It is not a de Polignac number, because 67698949 - 2¹⁹ = 67174661 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 67698893 and 67698902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67698979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33849474 + 33849475.

It is an arithmetic number, because the mean of its divisors is an integer number (33849475).

Almost surely, 2^67698949 is an apocalyptic number.

It is an amenable number.

67698949 is a deficient number, since it is larger than the sum of its proper divisors (1).

67698949 is an equidigital number, since it uses as much as digits as its factorization.

67698949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5878656, while the sum is 58.

The square root of 67698949 is about 8227.9371047669. The cubic root of 67698949 is about 407.5622728423.

The spelling of 67698949 in words is "sixty-seven million, six hundred ninety-eight thousand, nine hundred forty-nine".