68647284 has 96 divisors (see below), whose sum is σ = 187689600. Its totient is φ = 21669120.

The previous prime is 68647279. The next prime is 68647289. The reversal of 68647284 is 48274686.

It is an interprime number because it is at equal distance from previous prime (68647279) and next prime (68647289).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68647289) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 163627 + ... + 164045.

It is an arithmetic number, because the mean of its divisors is an integer number (1955100).

Almost surely, 2^68647284 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 68647284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93844800).

68647284 is an abundant number, since it is smaller than the sum of its proper divisors (119042316).

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

68647284 is a wasteful number, since it uses less digits than its factorization.

68647284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510 (or 502 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 68647284 is about 8285.3656527639. The cubic root of 68647284 is about 409.4565156633.

The spelling of 68647284 in words is "sixty-eight million, six hundred forty-seven thousand, two hundred eighty-four".