68488464 has 80 divisors (see below), whose sum is σ = 203201280. Its totient is φ = 19658880.

The previous prime is 68488463. The next prime is 68488471. The reversal of 68488464 is 46488486.

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (68488463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6619 + ... + 13445.

It is an arithmetic number, because the mean of its divisors is an integer number (2540016).

Almost surely, 2^68488464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68488464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101600640).

68488464 is an abundant number, since it is smaller than the sum of its proper divisors (134712816).

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

68488464 is a wasteful number, since it uses less digits than its factorization.

68488464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6868 (or 6862 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 48.

The square root of 68488464 is about 8275.7757340324. The cubic root of 68488464 is about 409.1405036529.

The spelling of 68488464 in words is "sixty-eight million, four hundred eighty-eight thousand, four hundred sixty-four".