68466240 has 84 divisors (see below), whose sum is σ = 235505244. Its totient is φ = 18256896.

The previous prime is 68466163. The next prime is 68466241. The reversal of 68466240 is 4266486.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20358144 + 48108096 = 4512^2 + 6936^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 68466195 and 68466204.

It is not an unprimeable number, because it can be changed into a prime (68466241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9007 + ... + 14766.

Almost surely, 2^68466240 is an apocalyptic number.

68466240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68466240 is an abundant number, since it is smaller than the sum of its proper divisors (167039004).

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

68466240 is a wasteful number, since it uses less digits than its factorization.

68466240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23796 (or 23783 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 68466240 is about 8274.4329110822. The cubic root of 68466240 is about 409.0962445095.

The spelling of 68466240 in words is "sixty-eight million, four hundred sixty-six thousand, two hundred forty".