68440884 has 12 divisors (see below), whose sum is σ = 159695424. Its totient is φ = 22813624.

The previous prime is 68440859. The next prime is 68440909. The reversal of 68440884 is 48804486.

It is an interprime number because it is at equal distance from previous prime (68440859) and next prime (68440909).

It is a tau number, because it is divible by the number of its divisors (12).

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, 2851692 + ... + 2851715.

It is an arithmetic number, because the mean of its divisors is an integer number (13307952).

Almost surely, 2^68440884 is an apocalyptic number.

It is an amenable number.

68440884 is an abundant number, since it is smaller than the sum of its proper divisors (91254540).

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

68440884 is a wasteful number, since it uses less digits than its factorization.

68440884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5703414 (or 5703412 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 42.

The square root of 68440884 is about 8272.9005796033. The cubic root of 68440884 is about 409.0457362826.

The spelling of 68440884 in words is "sixty-eight million, four hundred forty thousand, eight hundred eighty-four".