67499969 has 2 divisors, whose sum is σ = 67499970. Its totient is φ = 67499968.

The previous prime is 67499947. The next prime is 67500007. The reversal of 67499969 is 96999476.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59089969 + 8410000 = 7687^2 + 2900^2 .

It is a cyclic number.

It is not a de Polignac number, because 67499969 - 2²⁴ = 50722753 is a prime.

It is a super-2 number, since 2×67499969² = 9112491630001922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67495969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33749984 + 33749985.

It is an arithmetic number, because the mean of its divisors is an integer number (33749985).

Almost surely, 2^67499969 is an apocalyptic number.

It is an amenable number.

67499969 is a deficient number, since it is larger than the sum of its proper divisors (1).

67499969 is an equidigital number, since it uses as much as digits as its factorization.

67499969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6613488, while the sum is 59.

The square root of 67499969 is about 8215.8364759774. The cubic root of 67499969 is about 407.1625801582.

The spelling of 67499969 in words is "sixty-seven million, four hundred ninety-nine thousand, nine hundred sixty-nine".