68674440 has 64 divisors (see below), whose sum is σ = 210830400. Its totient is φ = 17885952.

The previous prime is 68674439. The next prime is 68674451. The reversal of 68674440 is 4447686.

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, 1495 + ... + 11814.

It is an arithmetic number, because the mean of its divisors is an integer number (3294225).

Almost surely, 2^68674440 is an apocalyptic number.

68674440 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 68674440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105415200).

68674440 is an abundant number, since it is smaller than the sum of its proper divisors (142155960).

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

68674440 is a wasteful number, since it uses less digits than its factorization.

68674440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13366 (or 13362 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 68674440 is about 8287.0042838169. The cubic root of 68674440 is about 409.5105004903.

The spelling of 68674440 in words is "sixty-eight million, six hundred seventy-four thousand, four hundred forty".