68632784 has 40 divisors (see below), whose sum is σ = 148169088. Its totient is φ = 30529280.

The previous prime is 68632777. The next prime is 68632799. The reversal of 68632784 is 48723686.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4124 + ... + 12420.

Almost surely, 2^68632784 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 68632784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74084544).

68632784 is an abundant number, since it is smaller than the sum of its proper divisors (79536304).

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

68632784 is a wasteful number, since it uses less digits than its factorization.

68632784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8363 (or 8357 counting only the distinct ones).

The product of its digits is 387072, while the sum is 44.

The square root of 68632784 is about 8284.4905697333. The cubic root of 68632784 is about 409.4276845273.

The spelling of 68632784 in words is "sixty-eight million, six hundred thirty-two thousand, seven hundred eighty-four".