68396880 has 80 divisors (see below), whose sum is σ = 212825664. Its totient is φ = 18170880.

The previous prime is 68396879. The next prime is 68396929. The reversal of 68396880 is 8869386.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

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 15 ways as a sum of consecutive naturals, for example, 124767 + ... + 125313.

Almost surely, 2^68396880 is an apocalyptic number.

68396880 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 68396880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106412832).

68396880 is an abundant number, since it is smaller than the sum of its proper divisors (144428784).

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

68396880 is a wasteful number, since it uses less digits than its factorization.

68396880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The square root of 68396880 is about 8270.2406252781. The cubic root of 68396880 is about 408.9580523013.

The spelling of 68396880 in words is "sixty-eight million, three hundred ninety-six thousand, eight hundred eighty".