68647320 has 96 divisors (see below), whose sum is σ = 254985120. Its totient is φ = 15690240.

The previous prime is 68647291. The next prime is 68647331. The reversal of 68647320 is 2374686.

68647320 is a `hidden beast` number, since 6 + 8 + 647 + 3 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11101 + ... + 16140.

It is an arithmetic number, because the mean of its divisors is an integer number (2656095).

Almost surely, 2^68647320 is an apocalyptic number.

68647320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68647320 is an abundant number, since it is smaller than the sum of its proper divisors (186337800).

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

68647320 is a wasteful number, since it uses less digits than its factorization.

68647320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27265 (or 27258 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 68647320 is about 8285.3678252688. The cubic root of 68647320 is about 409.4565872390.

The spelling of 68647320 in words is "sixty-eight million, six hundred forty-seven thousand, three hundred twenty".