68940480 has 112 divisors (see below), whose sum is σ = 250179840. Its totient is φ = 15756288.

The previous prime is 68940467. The next prime is 68940517. The reversal of 68940480 is 8404986.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1591 + ... + 11849.

Almost surely, 2^68940480 is an apocalyptic number.

68940480 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 68940480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125089920).

68940480 is an abundant number, since it is smaller than the sum of its proper divisors (181239360).

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

68940480 is a wasteful number, since it uses less digits than its factorization.

68940480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10286 (or 10276 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 68940480 is about 8303.0404069835. The cubic root of 68940480 is about 410.0386241622.

The spelling of 68940480 in words is "sixty-eight million, nine hundred forty thousand, four hundred eighty".