68634216 has 80 divisors (see below), whose sum is σ = 219716640. Its totient is φ = 19608480.

The previous prime is 68634199. The next prime is 68634221. The reversal of 68634216 is 61243686.

68634216 is a `hidden beast` number, since 6 + 8 + 634 + 2 + 16 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3030 + ... + 12101.

It is an arithmetic number, because the mean of its divisors is an integer number (2746458).

Almost surely, 2^68634216 is an apocalyptic number.

It is an amenable number.

68634216 is an abundant number, since it is smaller than the sum of its proper divisors (151082424).

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

68634216 is a wasteful number, since it uses less digits than its factorization.

68634216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15156 (or 15143 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 68634216 is about 8284.5769958399. The cubic root of 68634216 is about 409.4305320312.

The spelling of 68634216 in words is "sixty-eight million, six hundred thirty-four thousand, two hundred sixteen".