68784258 has 32 divisors (see below), whose sum is σ = 143027136. Its totient is φ = 22033728.

The previous prime is 68784253. The next prime is 68784263. The reversal of 68784258 is 85248786.

It is an interprime number because it is at equal distance from previous prime (68784253) and next prime (68784263).

It is a super-2 number, since 2×68784258² = 9462548297221128, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68784253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16560 + ... + 20292.

It is an arithmetic number, because the mean of its divisors is an integer number (4469598).

Almost surely, 2^68784258 is an apocalyptic number.

68784258 is an abundant number, since it is smaller than the sum of its proper divisors (74242878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68784258 is a wasteful number, since it uses less digits than its factorization.

68784258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3858.

The product of its digits is 860160, while the sum is 48.

The square root of 68784258 is about 8293.6275537306. The cubic root of 68784258 is about 409.7286683846.

The spelling of 68784258 in words is "sixty-eight million, seven hundred eighty-four thousand, two hundred fifty-eight".