67782290 has 8 divisors (see below), whose sum is σ = 122008140. Its totient is φ = 27112912.

The previous prime is 67782277. The next prime is 67782293. The reversal of 67782290 is 9228776.

It is a Cunningham number, because it is equal to 8233²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 67782289 + 1 = 8233^2 + 1^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (67782293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3389105 + ... + 3389124.

Almost surely, 2^67782290 is an apocalyptic number.

67782290 is a deficient number, since it is larger than the sum of its proper divisors (54225850).

67782290 is a wasteful number, since it uses less digits than its factorization.

67782290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6778236.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 67782290 is about 8233.0000607312. Note that the first 4 decimals coincide. The cubic root of 67782290 is about 407.7294478584.

The spelling of 67782290 in words is "sixty-seven million, seven hundred eighty-two thousand, two hundred ninety".