68440670 has 8 divisors (see below), whose sum is σ = 123193224. Its totient is φ = 27376264.

The previous prime is 68440661. The next prime is 68440711. The reversal of 68440670 is 7604486.

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

It is a self number, because there is not a number n which added to its sum of digits gives 68440670.

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 3 ways as a sum of consecutive naturals, for example, 3422024 + ... + 3422043.

It is an arithmetic number, because the mean of its divisors is an integer number (15399153).

Almost surely, 2^68440670 is an apocalyptic number.

68440670 is a deficient number, since it is larger than the sum of its proper divisors (54752554).

68440670 is a wasteful number, since it uses less digits than its factorization.

68440670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6844074.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 68440670 is about 8272.8876457982. The cubic root of 68440670 is about 409.0453099493.

The spelling of 68440670 in words is "sixty-eight million, four hundred forty thousand, six hundred seventy".