67969845 has 18 divisors (see below), whose sum is σ = 117910338. Its totient is φ = 36221088.

The previous prime is 67969831. The next prime is 67969871. The reversal of 67969845 is 54896976.

It can be written as a sum of positive squares in 3 ways, for example, as 47692836 + 20277009 = 6906^2 + 4503^2 .

It is not a de Polignac number, because 67969845 - 2⁵ = 67969813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67969791 and 67969800.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 54691 + ... + 55919.

Almost surely, 2^67969845 is an apocalyptic number.

It is an amenable number.

67969845 is a deficient number, since it is larger than the sum of its proper divisors (49940493).

67969845 is an equidigital number, since it uses as much as digits as its factorization.

67969845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2469 (or 1237 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The square root of 67969845 is about 8244.3826330417. The cubic root of 67969845 is about 408.1051668055.

It can be divided in two parts, 6796 and 9845, that added together give a square (16641 = 129²).

The spelling of 67969845 in words is "sixty-seven million, nine hundred sixty-nine thousand, eight hundred forty-five".