68883840 has 96 divisors (see below), whose sum is σ = 237884400. Its totient is φ = 18367488.

The previous prime is 68883809. The next prime is 68883853. The reversal of 68883840 is 4838886.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 220 + ... + 11739.

Almost surely, 2^68883840 is an apocalyptic number.

68883840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68883840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118942200).

68883840 is an abundant number, since it is smaller than the sum of its proper divisors (169000560).

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

68883840 is a wasteful number, since it uses less digits than its factorization.

68883840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11984 (or 11969 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 45.

The square root of 68883840 is about 8299.6289073669. The cubic root of 68883840 is about 409.9263004551.

The spelling of 68883840 in words is "sixty-eight million, eight hundred eighty-three thousand, eight hundred forty".