67244845 has 4 divisors (see below), whose sum is σ = 80693820. Its totient is φ = 53795872.

The previous prime is 67244839. The next prime is 67244851. The reversal of 67244845 is 54844276.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (67244839) and next prime (67244851).

It can be written as a sum of positive squares in 2 ways, for example, as 44262409 + 22982436 = 6653^2 + 4794^2 .

It is a cyclic number.

It is not a de Polignac number, because 67244845 - 2¹⁵ = 67212077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67244798 and 67244807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6724480 + ... + 6724489.

It is an arithmetic number, because the mean of its divisors is an integer number (20173455).

Almost surely, 2^67244845 is an apocalyptic number.

It is an amenable number.

67244845 is a deficient number, since it is larger than the sum of its proper divisors (13448975).

67244845 is a wasteful number, since it uses less digits than its factorization.

67244845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13448974.

The product of its digits is 215040, while the sum is 40.

The square root of 67244845 is about 8200.2954215077. The cubic root of 67244845 is about 406.6489597086.

The spelling of 67244845 in words is "sixty-seven million, two hundred forty-four thousand, eight hundred forty-five".