67780325 has 6 divisors (see below), whose sum is σ = 84047634. Its totient is φ = 54224240.

The previous prime is 67780313. The next prime is 67780331. The reversal of 67780325 is 52308776.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 10278436 + 57501889 = 3206^2 + 7583^2 .

It is not a de Polignac number, because 67780325 - 2⁶ = 67780261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 1355582 + ... + 1355631.

It is an arithmetic number, because the mean of its divisors is an integer number (14007939).

Almost surely, 2^67780325 is an apocalyptic number.

It is an amenable number.

67780325 is a deficient number, since it is larger than the sum of its proper divisors (16267309).

67780325 is a wasteful number, since it uses less digits than its factorization.

67780325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2711223 (or 2711218 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 67780325 is about 8232.8807230519. The cubic root of 67780325 is about 407.7255078119.

The spelling of 67780325 in words is "sixty-seven million, seven hundred eighty thousand, three hundred twenty-five".